#101F40#101F40

#101F40 is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.7% C 0.066 H 263.8°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#101F40
RGB	rgb(16, 31, 64)
HSL	hsl(221, 60%, 16%)
HSV	hsv(221, 75%, 25%)
CMYK	cmyk(75%, 51.6%, 0%, 74.9%)
CIE-LAB	lab(12.35, 6.70, -22.95)
CIE-LCH	lch(12.35, 23.91, 286.27°)
OKLab	oklab(24.67% -0.0071 -0.0656)
OKLCH	oklch(24.67% 0.066 263.8)
XYZ	xyz(1.6288, 1.4601, 5.0455)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F40 #403110

analogous

#103740 #101F40 #191040

triadic

#101F40 #40101F #1F4010

tetradic

#101F40 #401037 #403110 #104019

square

#101F40 #401037 #403110 #104019

split-complementary

#101F40 #401910 #374010

monochromatic

#060C18 #060C18 #101F40 #1C3771 #284EA2

Accessibility & contrast

On white

16.25

#101F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F40

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F40	#FFFFFF	#000000	##FFFFFF
##101F40	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F2341

Deuteranopia (green-blind)

#071E3F

Tritanopia (blue-blind)

#00272C

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101f40;
/* rgb */ color: rgb(16, 31, 64);
/* oklch */ color: oklch(24.7% 0.066 263.8);

Tailwind

colors: {
  custom: {
    50: '#555a75',
    500: '#101f40',
    950: '#000000',
  },
}

SCSS

$custom: #101f40;
$custom-light: #555a75;
$custom-dark: #000000;

JSON

{
  "hex": "#101f40",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 64
  },
  "hsl": {
    "h": 221.25,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.24669,
    "c": 0.066,
    "h": 263.8
  },
  "luminance": 0.0146
}

Semantic roles & 50–950 ramp

primary

#101F40

secondary

#7A6332

accent

#B245E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101F40

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

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