#101B81#101B81

#101B81 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.166 H 267.8°. Best body text is #FFFFFF at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#101B81
RGB	rgb(16, 27, 129)
HSL	hsl(234, 78%, 28%)
HSV	hsv(234, 88%, 51%)
CMYK	cmyk(87.6%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(17.82, 35.99, -57.25)
CIE-LCH	lch(17.82, 67.62, 302.16°)
OKLab	oklab(30.67% -0.0065 -0.1659)
OKLCH	oklch(30.67% 0.166 267.8)
XYZ	xyz(4.5667, 2.4784, 21.0023)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B81 #817610

analogous

#105381 #101B81 #3D1081

triadic

#101B81 #81101B #1B8110

tetradic

#101B81 #811053 #817610 #10813D

square

#101B81 #811053 #817610 #10813D

split-complementary

#101B81 #813D10 #538110

monochromatic

#03061B #09104B #101B81 #1726B7 #273AE4

Accessibility & contrast

On white

14.04

#101B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#101B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B81

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B81	#FFFFFF	#000000	##FFFFFF
##101B81	1.00	14.04	1.50	14.04
#FFFFFF	14.04	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003184

Deuteranopia (green-blind)

#00267F

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #101b81;
/* rgb */ color: rgb(16, 27, 129);
/* oklch */ color: oklch(30.7% 0.166 267.8);

Tailwind

colors: {
  custom: {
    50: '#6859a7',
    500: '#101b81',
    950: '#000000',
  },
}

SCSS

$custom: #101b81;
$custom-light: #6859a7;
$custom-dark: #000000;

JSON

{
  "hex": "#101b81",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 234.159,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30665,
    "c": 0.16606,
    "h": 267.8
  },
  "luminance": 0.02479
}

Semantic roles & 50–950 ramp

primary

#101B81

secondary

#B7AA36

accent

#E233F4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070310

muted

#7A787F

Preview Lab

Preview with #101B81

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

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