#10204B#10204B

#10204B is a dark, moderate blue. Relative luminance 0.017; OKLCH L 25.8% C 0.083 H 265.5°. Best body text is #FFFFFF at 15.79:1 contrast (WCAG AA passes).

Color values

HEX	#10204B
RGB	rgb(16, 32, 75)
HSL	hsl(224, 65%, 18%)
HSV	hsv(224, 79%, 29%)
CMYK	cmyk(78.7%, 57.3%, 0%, 70.6%)
CIE-LAB	lab(13.54, 10.72, -28.69)
CIE-LCH	lch(13.54, 30.63, 290.48°)
OKLab	oklab(25.85% -0.0064 -0.0825)
OKLCH	oklch(25.85% 0.083 265.5)
XYZ	xyz(1.9998, 1.6510, 6.8685)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10204B #4B3B10

analogous

#103D4B #10204B #1D104B

triadic

#10204B #4B1020 #204B10

tetradic

#10204B #4B103D #4B3B10 #104B1D

square

#10204B #4B103D #4B3B10 #104B1D

split-complementary

#10204B #4B1D10 #3D4B10

monochromatic

#050B19 #050B19 #10204B #1B367D #264BB0

Accessibility & contrast

On white

15.79

#10204B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#10204B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10204B

15.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10204B	#FFFFFF	#000000	##FFFFFF
##10204B	1.00	15.79	1.33	15.79
#FFFFFF	15.79	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05254D

Deuteranopia (green-blind)

#00204A

Tritanopia (blue-blind)

#002A32

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #10204b;
/* rgb */ color: rgb(16, 32, 75);
/* oklch */ color: oklch(25.8% 0.083 265.5);

Tailwind

colors: {
  custom: {
    50: '#575a7e',
    500: '#10204b',
    950: '#000000',
  },
}

SCSS

$custom: #10204b;
$custom-light: #575a7e;
$custom-dark: #000000;

JSON

{
  "hex": "#10204b",
  "rgb": {
    "r": 16,
    "g": 32,
    "b": 75
  },
  "hsl": {
    "h": 223.729,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.25847,
    "c": 0.08273,
    "h": 265.5
  },
  "luminance": 0.01651
}

Semantic roles & 50–950 ramp

primary

#10204B

secondary

#856E32

accent

#BA40E8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04040A

muted

#79797C

Preview Lab

Preview with #10204B

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

Preview Lab → · Contrast checker → · Palette generator →