#1F2387#1F2387

#1F2387 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.161 H 271.8°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F2387
RGB	rgb(31, 35, 135)
HSL	hsl(238, 63%, 33%)
HSV	hsv(238, 77%, 53%)
CMYK	cmyk(77%, 74.1%, 0%, 47.1%)
CIE-LAB	lab(20.99, 34.40, -55.77)
CIE-LCH	lch(20.99, 65.53, 301.67°)
OKLab	oklab(33.33% 0.0051 -0.1614)
OKLCH	oklch(33.33% 0.161 271.8)
XYZ	xyz(5.5378, 3.2421, 23.2509)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2387 #87831F

analogous

#1F5787 #1F2387 #4F1F87

triadic

#1F2387 #871F23 #23871F

tetradic

#1F2387 #871F57 #87831F #1F874F

square

#1F2387 #871F57 #87831F #1F874F

split-complementary

#1F2387 #874F1F #57871F

monochromatic

#080923 #141655 #1F2387 #2A30B9 #4B50D6

Accessibility & contrast

On white

12.74

#1F2387 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F2387 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2387

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2387	#FFFFFF	#000000	##FFFFFF
##1F2387	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378A

Deuteranopia (green-blind)

#002D85

Tritanopia (blue-blind)

#003F52

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2387;
/* rgb */ color: rgb(31, 35, 135);
/* oklch */ color: oklch(33.3% 0.161 271.8);

Tailwind

colors: {
  custom: {
    50: '#6d5fab',
    500: '#1f2387',
    950: '#000000',
  },
}

SCSS

$custom: #1f2387;
$custom-light: #6d5fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2387",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 135
  },
  "hsl": {
    "h": 237.692,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33327,
    "c": 0.16149,
    "h": 271.8
  },
  "luminance": 0.03243
}

Semantic roles & 50–950 ramp

primary

#1F2387

secondary

#B8B44A

accent

#DF42E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2387

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

Preview Lab → · Contrast checker → · Palette generator →