#103F51#103F51

#103F51 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.058 H 228.0°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#103F51
RGB	rgb(16, 63, 81)
HSL	hsl(197, 67%, 19%)
HSV	hsv(197, 80%, 32%)
CMYK	cmyk(80.2%, 22.2%, 0%, 68.2%)
CIE-LAB	lab(24.51, -8.65, -15.37)
CIE-LCH	lch(24.51, 17.64, 240.64°)
OKLab	oklab(34.56% -0.0389 -0.0431)
OKLCH	oklch(34.56% 0.058 228)
XYZ	xyz(3.4758, 4.2588, 8.4218)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F51 #512210

analogous

#105143 #103F51 #101F51

triadic

#103F51 #51103F #3F5110

tetradic

#103F51 #431051 #512210 #1F5110

square

#103F51 #431051 #512210 #1F5110

split-complementary

#103F51 #51101F #514310

monochromatic

#05141A #06171E #103F51 #1A6784 #248EB7

Accessibility & contrast

On white

11.34

#103F51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#103F51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F51

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F51	#FFFFFF	#000000	##FFFFFF
##103F51	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E52

Deuteranopia (green-blind)

#2D3751

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103f51;
/* rgb */ color: rgb(16, 63, 81);
/* oklch */ color: oklch(34.6% 0.058 228.0);

Tailwind

colors: {
  custom: {
    50: '#597482',
    500: '#103f51',
    950: '#000000',
  },
}

SCSS

$custom: #103f51;
$custom-light: #597482;
$custom-dark: #000000;

JSON

{
  "hex": "#103f51",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 81
  },
  "hsl": {
    "h": 196.615,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.34556,
    "c": 0.05806,
    "h": 228
  },
  "luminance": 0.04259
}

Semantic roles & 50–950 ramp

primary

#103F51

secondary

#8B4B32

accent

#6E3EEA

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #103F51

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

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