Skip to content

#115d5c

a deep, vivid cyan · cool · closest name: Dark Slate Gray

RGB
17, 93, 92
HSL
179°, 69%, 22%
CMYK
82, 0, 1, 64
Luminance
0.0872

At a glance

Every number on this page in one read: what #115d5c is made of, how bright it looks, and which way it leans.

Hex
#115d5c
Hue
179°
cyan
Saturation
69%
vivid
Lightness
22%
deep
Brightness
36%
HSV value
Perceived
31%
weighted brightness
Luminance
0.0872
WCAG relative
Temperature
Cool
87/100 cool
Color family
Cyan
Tone
Vivid
Best ink
White
7.65:1
Closest name
Dark Slate Gray
ΔE2000 7.6
Where it sits
Hue179° of 360°
Saturation69%
Lightness22%
Temperature
Warm ← → Cool87% 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#115d5c
RGBrgb(17, 93, 92)
HSLhsl(179, 69%, 22%)
CMYKcmyk(82%, 0%, 1%, 64%)
LABlab(35.4 -21.8 -5.8)
LCHlch(35.4 22.6 194.9)
OKLCHoklch(0.435 0.069 193.6)
Decimal1138012
Display P3color(display-p3 0.067 0.365 0.361)

Copy-ready code

/* CSS */
color: #115d5c;
background-color: #115d5c;
/* Tailwind (arbitrary) */
class="text-[#115d5c] bg-[#115d5c]"
/* SCSS */
$brand: #115d5c;
/* SwiftUI */
Color(red: 0.067, green: 0.365, blue: 0.361)
/* Android */
Color.parseColor("#115d5c")
/* Flutter */
Color(0xFF115D5C)
/* Python / OpenCV (BGR) */
(92, 93, 17)

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#ffffff on #115d5c · 7.65:1
Use #ffffffAAA at every size.
Aa
White text · 7.65:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 2.74:1
AA fail · AA large fail · AAA fail
Reading the other direction: #115d5c as text scores 7.65:1 on white and 2.74:1 on black.

Accessibility — WCAG contrast

Aa
#115d5c on white: 7.65:1
AA ✓ pass · AA-large · AAA
Aa
#115d5c on black: 2.74:1
AA ✗ fail · AA-large · AAA
true color
protanopia · #56585C
deuteranopia · #4C505D
tritanopia · #00605C

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #115d5c is pinned to step 900; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3FBFB
#E7F8F8
#CAF2F1
#A0EEED
#71E5E3
#41DCDA
#26CFCD
#20ACAB
#198A88
#115d5c
#0E3F3E
Base = 900Lightest = 50 · #F3FBFBDarkest = 950 · #0E3F3E
:root {
  --brand-50: #F3FBFB;
  --brand-100: #E7F8F8;
  --brand-200: #CAF2F1;
  --brand-300: #A0EEED;
  --brand-400: #71E5E3;
  --brand-500: #41DCDA;
  --brand-600: #26CFCD;
  --brand-700: #20ACAB;
  --brand-800: #198A88;
  --brand-900: #115d5c;
  --brand-950: #0E3F3E;
  --brand: #115d5c;
  --brand-ink: #ffffff;
}

Colors that work with #115d5c

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

Text on it#ffffff
White wins here
Surface#F4FAFA
Tinted page background
Border#C0EDEC
Hairlines and dividers
Muted text#4B9B9A
Captions on the surface
Accent#5F0F24
Second voice, not a rival
Dark variant#146C6B
Hover, pressed, headers
Light variant#E9FBFB
Selected rows, tints
Dark surface#142424
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 #115d5c

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

Works well for
  • Body text and links on white
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Text on black or near-black surfaces
  • Full-page backgrounds — tiring over long sessions
  • Black text placed on it
  • Thin strokes and 1px borders — they disappear on light UI
  • 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#5D1112
Analogous left#115D36
Analogous right#11385D
Split-complement 1#5D1138
Split-complement 2#5D3611
Triadic 1#5C115D
Triadic 2#5D5C11
Tetradic#36115D

RGB percentages

Red6.7%
Green36.5%
Blue36.1%

CMYK percentages

Cyan81.7%
Magenta0.0%
Yellow1.1%
Key (black)63.5%

Color previews

#115d5c text on a black background

contrast 2.74:1

Card sample

#115d5c text on a white background

contrast 7.65:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #115d5c;
Background color
Panel with #115d5c background
background-color: #115d5c;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #115d5c;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(17, 93, 92, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(17, 93, 92, 0.45);
Border & gradient
Gradient panel
border: 3px solid #115d5c;
background: linear-gradient(135deg, #115d5c, #112B5D);

Monochromatic scale

Palettes built from #115d5c

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.

#115d5c in the real world

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

Industries
TechnologyTravelHealthcareMedia
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Converts to four-color process without much drama. Proof it anyway.

#115d5c, answered

What color is #115d5c?

#115d5c is a deep vivid cyan, closest to Dark Slate Gray (ΔE2000 7.6). It sits at 179° on the hue wheel with 69% saturation and 22% lightness, which reads as cool.

What is the RGB value of #115d5c?

rgb(17, 93, 92) — 17 red, 93 green and 92 blue out of 255, or 6.7% / 36.5% / 36.1% by channel.

Is #115d5c a light or a dark color?

It is a dark color. Relative luminance is 0.0872 and perceived brightness is 31%, so white text on it reaches 7.65:1.

Should I use black or white text on #115d5c?

White. It scores 7.65:1 against #115d5c, versus 2.74:1 for black — AAA at any size.

What is the complementary color of #115d5c?

#5D1112 sits directly opposite on the wheel. Softer options are the split-complements #5D1138 and #5D3611, which give the same contrast with far less vibration.

What colors go well with #115d5c?

For interface work: #F4FAFA as the surface, #C0EDEC for borders, #4B9B9A for secondary text, #5F0F24 as an accent and #146C6B for hover and pressed states. For a palette, the analogous pair #115D36 and #11385D stays calm, while #5D1112 is the loudest partner.

What is #115d5c in CMYK for printing?

cmyk(82%, 0%, 1%, 64%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #115d5c warm or cool?

Cool — it scores 87 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #115D40; nudged cooler, #10435E.

Work with #115d5c in the Color Lab