#103F5E#103F5E

#103F5E is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.3% C 0.073 H 242.4°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#103F5E
RGB	rgb(16, 63, 94)
HSL	hsl(204, 71%, 22%)
HSV	hsv(204, 83%, 37%)
CMYK	cmyk(83%, 33%, 0%, 63.1%)
CIE-LAB	lab(25.18, -3.41, -22.83)
CIE-LCH	lch(25.18, 23.08, 261.50°)
OKLab	oklab(35.31% -0.0338 -0.0647)
OKLCH	oklch(35.31% 0.073 242.4)
XYZ	xyz(4.0108, 4.4728, 11.2395)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F5E #5E2F10

analogous

#105E56 #103F5E #10185E

triadic

#103F5E #5E103F #3F5E10

tetradic

#103F5E #56105E #5E2F10 #185E10

square

#103F5E #56105E #5E2F10 #185E10

split-complementary

#103F5E #5E1018 #5E5610

monochromatic

#04121A #071C2A #103F5E #196292 #2285C7

Accessibility & contrast

On white

11.08

#103F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#103F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F5E

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F5E	#FFFFFF	#000000	##FFFFFF
##103F5E	1.00	11.08	1.89	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31405F

Deuteranopia (green-blind)

#26385D

Tritanopia (blue-blind)

#00474A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #103f5e;
/* rgb */ color: rgb(16, 63, 94);
/* oklch */ color: oklch(35.3% 0.073 242.4);

Tailwind

colors: {
  custom: {
    50: '#5c738c',
    500: '#103f5e',
    950: '#000000',
  },
}

SCSS

$custom: #103f5e;
$custom-light: #5c738c;
$custom-dark: #000000;

JSON

{
  "hex": "#103f5e",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 94
  },
  "hsl": {
    "h": 203.846,
    "s": 70.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.35307,
    "c": 0.07299,
    "h": 242.4
  },
  "luminance": 0.04473
}

Semantic roles & 50–950 ramp

primary

#103F5E

secondary

#975B33

accent

#813AEE

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #103F5E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →