#101C81#101C81

#101C81 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.165 H 267.7°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#101C81
RGB	rgb(16, 28, 129)
HSL	hsl(234, 78%, 28%)
HSV	hsv(234, 88%, 51%)
CMYK	cmyk(87.6%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(18.03, 35.39, -56.90)
CIE-LCH	lch(18.03, 67.01, 301.88°)
OKLab	oklab(30.81% -0.0067 -0.1649)
OKLCH	oklch(30.81% 0.165 267.7)
XYZ	xyz(4.5900, 2.5251, 21.0101)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C81 #817510

analogous

#105481 #101C81 #3C1081

triadic

#101C81 #81101C #1C8110

tetradic

#101C81 #811054 #817510 #10813C

square

#101C81 #811054 #817510 #10813C

split-complementary

#101C81 #813C10 #548110

monochromatic

#03061B #09104B #101C81 #1728B7 #273BE4

Accessibility & contrast

On white

13.95

#101C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#101C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C81

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C81	#FFFFFF	#000000	##FFFFFF
##101C81	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00267F

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #101c81;
/* rgb */ color: rgb(16, 28, 129);
/* oklch */ color: oklch(30.8% 0.165 267.7);

Tailwind

colors: {
  custom: {
    50: '#6859a7',
    500: '#101c81',
    950: '#000000',
  },
}

SCSS

$custom: #101c81;
$custom-light: #6859a7;
$custom-dark: #000000;

JSON

{
  "hex": "#101c81",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 233.628,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30814,
    "c": 0.16506,
    "h": 267.7
  },
  "luminance": 0.02526
}

Semantic roles & 50–950 ramp

primary

#101C81

secondary

#B7A936

accent

#E033F4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070310

muted

#7A787F

Preview Lab

Preview with #101C81

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

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