Skip to content

#1f8dfd

a balanced, electric blue · cool · closest name: Dodger Blue

RGB
31, 141, 253
HSL
210°, 98%, 56%
CMYK
88, 44, 0, 1
Luminance
0.2643

At a glance

Every number on this page in one read: what #1f8dfd is made of, how bright it looks, and which way it leans.

Hex
#1f8dfd
Hue
210°
blue
Saturation
98%
electric
Lightness
56%
balanced
Brightness
99%
HSV value
Perceived
54%
weighted brightness
Luminance
0.2643
WCAG relative
Temperature
Cool
100/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
6.29:1
Closest name
Dodger Blue
ΔE2000 1
Where it sits
Hue210° of 360°
Saturation98%
Lightness56%
Temperature
Warm ← → Cool100% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Every format

HEX#1f8dfd
RGBrgb(31, 141, 253)
HSLhsl(210, 98%, 56%)
CMYKcmyk(88%, 44%, 0%, 1%)
LABlab(58.4 11.1 -63.8)
LCHlch(58.4 64.8 279.9)
OKLCHoklch(0.644 0.191 253.9)
Decimal2067965
Display P3color(display-p3 0.122 0.553 0.992)

Copy-ready code

/* CSS */
color: #1f8dfd;
background-color: #1f8dfd;
/* Tailwind (arbitrary) */
class="text-[#1f8dfd] bg-[#1f8dfd]"
/* SCSS */
$brand: #1f8dfd;
/* SwiftUI */
Color(red: 0.122, green: 0.553, blue: 0.992)
/* Android */
Color.parseColor("#1f8dfd")
/* Flutter */
Color(0xFF1F8DFD)
/* Python / OpenCV (BGR) */
(253, 141, 31)

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #1f8dfd · 6.29:1
Use #000000AA at every size, AAA for large text only.
Aa
White text · 3.34:1
AA fail · AA large pass · AAA fail
Aa
Black text · 6.29:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #1f8dfd as text scores 3.34:1 on white and 6.29:1 on black.

Accessibility — WCAG contrast

Aa
#1f8dfd on white: 3.34:1
AA ✗ fail · AA-large · AAA
Aa
#1f8dfd on black: 6.29:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #5097FF
deuteranopia · #1A84FB
tritanopia · #00A8B9

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #1f8dfd is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F1F7FD
#E3F0FC
#C1DEFB
#90C6FE
#58AAFD
#1f8dfd
#0279F3
#0265CA
#0151A2
#063D74
#042649
Base = 500Lightest = 50 · #F1F7FDDarkest = 950 · #042649
:root {
  --brand-50: #F1F7FD;
  --brand-100: #E3F0FC;
  --brand-200: #C1DEFB;
  --brand-300: #90C6FE;
  --brand-400: #58AAFD;
  --brand-500: #1f8dfd;
  --brand-600: #0279F3;
  --brand-700: #0265CA;
  --brand-800: #0151A2;
  --brand-900: #063D74;
  --brand-950: #042649;
  --brand: #1f8dfd;
  --brand-ink: #000000;
}

Colors that work with #1f8dfd

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F4F7FA
Tinted page background
Border#C0D6ED
Hairlines and dividers
Muted text#4B729B
Captions on the surface
Accent#CC3400
Second voice, not a rival
Dark variant#013F7E
Hover, pressed, headers
Light variant#E6F2FF
Selected rows, tints
Dark surface#141C24
Dark-mode background
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

How to use #1f8dfd

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Brand accents, badges and data highlights
Use with care
  • Small text on white — under 4.5:1
  • Full-page backgrounds — tiring over long sessions
  • Pairing with a same-lightness hue — edges vibrate

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#FD8F1F
Analogous left#1FFCFD
Analogous right#201FFD
Split-complement 1#FD201F
Split-complement 2#FCFD1F
Triadic 1#FD1F8D
Triadic 2#8DFD1F
Tetradic#FD1FFC

RGB percentages

Red12.2%
Green55.3%
Blue99.2%

CMYK percentages

Cyan87.7%
Magenta44.3%
Yellow0.0%
Key (black)0.8%

Color previews

#1f8dfd text on a black background

contrast 6.29:1

Card sample

#1f8dfd text on a white background

contrast 3.34:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #1f8dfd;
Background color
Panel with #1f8dfd background
background-color: #1f8dfd;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1f8dfd;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(31, 141, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 141, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f8dfd;
background: linear-gradient(135deg, #1f8dfd, #451FFD);

Monochromatic scale

Palettes built from #1f8dfd

Shades — darker

Tints — lighter

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#1f8dfd in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyFinanceHealthcareEnterprise SaaS
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

#1f8dfd, answered

What color is #1f8dfd?

#1f8dfd is a balanced electric blue, closest to Dodger Blue (ΔE2000 1). It sits at 210° on the hue wheel with 98% saturation and 56% lightness, which reads as cool.

What is the RGB value of #1f8dfd?

rgb(31, 141, 253) — 31 red, 141 green and 253 blue out of 255, or 12.2% / 55.3% / 99.2% by channel.

Is #1f8dfd a light or a dark color?

It is a mid-tone. Relative luminance is 0.2643 and perceived brightness is 54%, so black text on it reaches 6.29:1.

Should I use black or white text on #1f8dfd?

Black. It scores 6.29:1 against #1f8dfd, versus 3.34:1 for white — AA at any size.

What is the complementary color of #1f8dfd?

#FD8F1F sits directly opposite on the wheel. Softer options are the split-complements #FD201F and #FCFD1F, which give the same contrast with far less vibration.

What colors go well with #1f8dfd?

For interface work: #F4F7FA as the surface, #C0D6ED for borders, #4B729B for secondary text, #CC3400 as an accent and #013F7E for hover and pressed states. For a palette, the analogous pair #1FFCFD and #201FFD stays calm, while #FD8F1F is the loudest partner.

What is #1f8dfd in CMYK for printing?

cmyk(88%, 44%, 0%, 1%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #1f8dfd warm or cool?

Cool — it scores 100 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #1F3CFD; nudged cooler, #047EFF.

Work with #1f8dfd in the Color Lab