#1F2A88#1F2A88

#1F2A88 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.6% C 0.155 H 270.4°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A88
RGB	rgb(31, 42, 136)
HSL	hsl(234, 63%, 33%)
HSV	hsv(234, 77%, 53%)
CMYK	cmyk(77.2%, 69.1%, 0%, 46.7%)
CIE-LAB	lab(22.74, 30.28, -53.52)
CIE-LCH	lch(22.74, 61.49, 299.50°)
OKLab	oklab(34.62% 0.0011 -0.1548)
OKLCH	oklch(34.62% 0.155 270.4)
XYZ	xyz(5.8355, 3.7242, 23.6991)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A88 #887D1F

analogous

#1F5F88 #1F2A88 #481F88

triadic

#1F2A88 #881F2A #2A881F

tetradic

#1F2A88 #881F5F #887D1F #1F8848

square

#1F2A88 #881F5F #887D1F #1F8848

split-complementary

#1F2A88 #88481F #5F881F

monochromatic

#080B24 #141B56 #1F2A88 #2A39BA #4B5AD6

Accessibility & contrast

On white

12.03

#1F2A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F2A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A88

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A88	#FFFFFF	#000000	##FFFFFF
##1F2A88	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8B

Deuteranopia (green-blind)

#003186

Tritanopia (blue-blind)

#004355

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2a88;
/* rgb */ color: rgb(31, 42, 136);
/* oklch */ color: oklch(34.6% 0.155 270.4);

Tailwind

colors: {
  custom: {
    50: '#6d63ac',
    500: '#1f2a88',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a88;
$custom-light: #6d63ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a88",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 136
  },
  "hsl": {
    "h": 233.714,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.3462,
    "c": 0.15484,
    "h": 270.4
  },
  "luminance": 0.03725
}

Semantic roles & 50–950 ramp

primary

#1F2A88

secondary

#B9AD4A

accent

#D542E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2A88

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

Preview Lab → · Contrast checker → · Palette generator →