#101F37#101F37

#101F37 is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.0% C 0.051 H 259.4°. Best body text is #FFFFFF at 16.49:1 contrast (WCAG AA passes).

Color values

HEX	#101F37
RGB	rgb(16, 31, 55)
HSL	hsl(217, 55%, 14%)
HSV	hsv(217, 71%, 22%)
CMYK	cmyk(70.9%, 43.6%, 0%, 78.4%)
CIE-LAB	lab(11.73, 2.84, -17.57)
CIE-LCH	lch(11.73, 17.80, 279.19°)
OKLab	oklab(23.98% -0.0093 -0.0498)
OKLCH	oklch(23.98% 0.051 259.4)
XYZ	xyz(1.3930, 1.3658, 3.8039)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F37 #372810

analogous

#103337 #101F37 #151037

triadic

#101F37 #37101F #1F3710

tetradic

#101F37 #371033 #372810 #103715

square

#101F37 #371033 #372810 #103715

split-complementary

#101F37 #371510 #333710

monochromatic

#070D18 #070D18 #101F37 #1E3A66 #2C5496

Accessibility & contrast

On white

16.49

#101F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#101F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F37

16.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F37	#FFFFFF	#000000	##FFFFFF
##101F37	1.00	16.49	1.27	16.49
#FFFFFF	16.49	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#152138

Deuteranopia (green-blind)

#101D36

Tritanopia (blue-blind)

#002428

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #101f37;
/* rgb */ color: rgb(16, 31, 55);
/* oklch */ color: oklch(24.0% 0.051 259.4);

Tailwind

colors: {
  custom: {
    50: '#525a6e',
    500: '#101f37',
    950: '#000000',
  },
}

SCSS

$custom: #101f37;
$custom-light: #525a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#101f37",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 55
  },
  "hsl": {
    "h": 216.923,
    "s": 54.93,
    "l": 13.922
  },
  "oklch": {
    "l": 0.23984,
    "c": 0.0507,
    "h": 259.4
  },
  "luminance": 0.01366
}

Semantic roles & 50–950 ramp

primary

#101F37

secondary

#715932

accent

#A54ADE

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020307

muted

#78787A

Preview Lab

Preview with #101F37

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

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