#101D81#101D81

#101D81 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.164 H 267.6°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#101D81
RGB	rgb(16, 29, 129)
HSL	hsl(233, 78%, 28%)
HSV	hsv(233, 88%, 51%)
CMYK	cmyk(87.6%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(18.25, 34.78, -56.54)
CIE-LCH	lch(18.25, 66.38, 301.60°)
OKLab	oklab(30.97% -0.007 -0.1639)
OKLCH	oklch(30.97% 0.164 267.6)
XYZ	xyz(4.6141, 2.5733, 21.0181)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D81 #817410

analogous

#105581 #101D81 #3B1081

triadic

#101D81 #81101D #1D8110

tetradic

#101D81 #811055 #817410 #10813B

square

#101D81 #811055 #817410 #10813B

split-complementary

#101D81 #813B10 #558110

monochromatic

#03061B #09114B #101D81 #1729B7 #273DE4

Accessibility & contrast

On white

13.86

#101D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#101D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D81

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D81	#FFFFFF	#000000	##FFFFFF
##101D81	1.00	13.86	1.51	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#003B4E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #101d81;
/* rgb */ color: rgb(16, 29, 129);
/* oklch */ color: oklch(31.0% 0.164 267.6);

Tailwind

colors: {
  custom: {
    50: '#685aa7',
    500: '#101d81',
    950: '#000000',
  },
}

SCSS

$custom: #101d81;
$custom-light: #685aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#101d81",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 233.097,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30967,
    "c": 0.16405,
    "h": 267.6
  },
  "luminance": 0.02574
}

Semantic roles & 50–950 ramp

primary

#101D81

secondary

#B7A836

accent

#DE33F4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070410

muted

#7A797F

Preview Lab

Preview with #101D81

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

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