#1F2987#1F2987

#1F2987 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.3% C 0.155 H 270.7°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F2987
RGB	rgb(31, 41, 135)
HSL	hsl(234, 63%, 33%)
HSV	hsv(234, 77%, 53%)
CMYK	cmyk(77%, 69.6%, 0%, 47.1%)
CIE-LAB	lab(22.39, 30.56, -53.46)
CIE-LCH	lch(22.39, 61.58, 299.76°)
OKLab	oklab(34.34% 0.0018 -0.1547)
OKLCH	oklch(34.34% 0.155 270.7)
XYZ	xyz(5.7297, 3.6258, 23.3149)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2987 #877D1F

analogous

#1F5D87 #1F2987 #491F87

triadic

#1F2987 #871F29 #29871F

tetradic

#1F2987 #871F5D #877D1F #1F8749

square

#1F2987 #871F5D #877D1F #1F8749

split-complementary

#1F2987 #87491F #5D871F

monochromatic

#080B23 #141A55 #1F2987 #2A38B9 #4B58D6

Accessibility & contrast

On white

12.17

#1F2987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F2987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2987

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2987	#FFFFFF	#000000	##FFFFFF
##1F2987	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8A

Deuteranopia (green-blind)

#003185

Tritanopia (blue-blind)

#004354

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2987;
/* rgb */ color: rgb(31, 41, 135);
/* oklch */ color: oklch(34.3% 0.155 270.7);

Tailwind

colors: {
  custom: {
    50: '#6c63ab',
    500: '#1f2987',
    950: '#000000',
  },
}

SCSS

$custom: #1f2987;
$custom-light: #6c63ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2987",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 135
  },
  "hsl": {
    "h": 234.231,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3434,
    "c": 0.15468,
    "h": 270.7
  },
  "luminance": 0.03626
}

Semantic roles & 50–950 ramp

primary

#1F2987

secondary

#B8AE4A

accent

#D642E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2987

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

Preview Lab → · Contrast checker → · Palette generator →