#1F1877#1F1877

#1F1877 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.152 H 275.3°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F1877
RGB	rgb(31, 24, 119)
HSL	hsl(244, 66%, 28%)
HSV	hsv(244, 80%, 47%)
CMYK	cmyk(73.9%, 79.8%, 0%, 53.3%)
CIE-LAB	lab(16.87, 35.36, -52.40)
CIE-LCH	lch(16.87, 63.22, 304.01°)
OKLab	oklab(29.88% 0.0139 -0.1515)
OKLCH	oklch(29.88% 0.152 275.3)
XYZ	xyz(4.2204, 2.2761, 17.6661)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1877 #707718

analogous

#184077 #1F1877 #4E1877

triadic

#1F1877 #771F18 #18771F

tetradic

#1F1877 #771840 #707718 #18774E

square

#1F1877 #771840 #707718 #18774E

split-complementary

#1F1877 #774E18 #407718

monochromatic

#070519 #120E44 #1F1877 #2C22AA #3F33D6

Accessibility & contrast

On white

14.43

#1F1877 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F1877 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1877

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1877	#FFFFFF	#000000	##FFFFFF
##1F1877	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7A

Deuteranopia (green-blind)

#002575

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1877;
/* rgb */ color: rgb(31, 24, 119);
/* oklch */ color: oklch(29.9% 0.152 275.3);

Tailwind

colors: {
  custom: {
    50: '#6a579f',
    500: '#1f1877',
    950: '#000000',
  },
}

SCSS

$custom: #1f1877;
$custom-light: #6a579f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1877",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 119
  },
  "hsl": {
    "h": 244.421,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29879,
    "c": 0.15217,
    "h": 275.3
  },
  "luminance": 0.02276
}

Semantic roles & 50–950 ramp

primary

#1F1877

secondary

#A4AC3F

accent

#E93EDD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1F1877

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

Preview Lab → · Contrast checker → · Palette generator →