#101F59#101F59

#101F59 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.106 H 267.5°. Best body text is #FFFFFF at 15.42:1 contrast (WCAG AA passes).

Color values

HEX	#101F59
RGB	rgb(16, 31, 89)
HSL	hsl(228, 70%, 21%)
HSV	hsv(228, 82%, 35%)
CMYK	cmyk(82%, 65.2%, 0%, 65.1%)
CIE-LAB	lab(14.46, 17.51, -36.70)
CIE-LCH	lch(14.46, 40.66, 295.51°)
OKLab	oklab(26.93% -0.0047 -0.106)
OKLCH	oklch(26.93% 0.106 267.5)
XYZ	xyz(2.5062, 1.8111, 9.6668)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F59 #594A10

analogous

#104359 #101F59 #251059

triadic

#101F59 #59101F #1F5910

tetradic

#101F59 #591043 #594A10 #105925

square

#101F59 #591043 #594A10 #105925

split-complementary

#101F59 #592510 #435910

monochromatic

#05091A #070D25 #101F59 #19318D #2343C1

Accessibility & contrast

On white

15.42

#101F59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101F59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F59

15.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F59	#FFFFFF	#000000	##FFFFFF
##101F59	1.00	15.42	1.36	15.42
#FFFFFF	15.42	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285B

Deuteranopia (green-blind)

#002158

Tritanopia (blue-blind)

#002E38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #101f59;
/* rgb */ color: rgb(16, 31, 89);
/* oklch */ color: oklch(26.9% 0.106 267.5);

Tailwind

colors: {
  custom: {
    50: '#5c5a88',
    500: '#101f59',
    950: '#000000',
  },
}

SCSS

$custom: #101f59;
$custom-light: #5c5a88;
$custom-dark: #000000;

JSON

{
  "hex": "#101f59",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 89
  },
  "hsl": {
    "h": 227.671,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.2693,
    "c": 0.10614,
    "h": 267.5
  },
  "luminance": 0.01811
}

Semantic roles & 50–950 ramp

primary

#101F59

secondary

#927F33

accent

#C83BEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101F59

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

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