#103F5D#103F5D

#103F5D is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.2% C 0.072 H 241.6°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#103F5D
RGB	rgb(16, 63, 93)
HSL	hsl(203, 71%, 21%)
HSV	hsv(203, 83%, 36%)
CMYK	cmyk(82.8%, 32.3%, 0%, 63.5%)
CIE-LAB	lab(25.12, -3.82, -22.26)
CIE-LCH	lch(25.12, 22.59, 260.25°)
OKLab	oklab(35.24% -0.0341 -0.063)
OKLCH	oklch(35.24% 0.072 241.6)
XYZ	xyz(3.9662, 4.4550, 11.0047)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F5D #5D2E10

analogous

#105D55 #103F5D #10195D

triadic

#103F5D #5D103F #3F5D10

tetradic

#103F5D #55105D #5D2E10 #195D10

square

#103F5D #55105D #5D2E10 #195D10

split-complementary

#103F5D #5D1019 #5D5510

monochromatic

#04121A #071C29 #103F5D #196291 #2286C5

Accessibility & contrast

On white

11.11

#103F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#103F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F5D

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F5D	#FFFFFF	#000000	##FFFFFF
##103F5D	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31405E

Deuteranopia (green-blind)

#26385C

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #103f5d;
/* rgb */ color: rgb(16, 63, 93);
/* oklch */ color: oklch(35.2% 0.072 241.6);

Tailwind

colors: {
  custom: {
    50: '#5c738b',
    500: '#103f5d',
    950: '#000000',
  },
}

SCSS

$custom: #103f5d;
$custom-light: #5c738b;
$custom-dark: #000000;

JSON

{
  "hex": "#103f5d",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 93
  },
  "hsl": {
    "h": 203.377,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.35245,
    "c": 0.0717,
    "h": 241.6
  },
  "luminance": 0.04455
}

Semantic roles & 50–950 ramp

primary

#103F5D

secondary

#965933

accent

#803AED

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#04080C

muted

#797B7D

Preview Lab

Preview with #103F5D

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

Preview Lab → · Contrast checker → · Palette generator →