#1F255F#1F255F

#1F255F is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.7% C 0.102 H 273.9°. Best body text is #FFFFFF at 14.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F255F
RGB	rgb(31, 37, 95)
HSL	hsl(234, 51%, 25%)
HSV	hsv(234, 67%, 37%)
CMYK	cmyk(67.4%, 61.1%, 0%, 62.7%)
CIE-LAB	lab(17.65, 17.95, -35.48)
CIE-LCH	lch(17.65, 39.76, 296.83°)
OKLab	oklab(29.71% 0.007 -0.102)
OKLCH	oklch(29.71% 0.102 273.9)
XYZ	xyz(3.2915, 2.4404, 11.1218)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F255F #5F591F

analogous

#1F455F #1F255F #391F5F

triadic

#1F255F #5F1F25 #255F1F

tetradic

#1F255F #5F1F45 #5F591F #1F5F39

square

#1F255F #5F1F45 #5F591F #1F5F39

split-complementary

#1F255F #5F391F #455F1F

monochromatic

#080917 #101331 #1F255F #2E378D #3D49BB

Accessibility & contrast

On white

14.11

#1F255F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1F255F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F255F

14.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F255F	#FFFFFF	#000000	##FFFFFF
##1F255F	1.00	14.11	1.49	14.11
#FFFFFF	14.11	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E61

Deuteranopia (green-blind)

#00295E

Tritanopia (blue-blind)

#00333E

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f255f;
/* rgb */ color: rgb(31, 37, 95);
/* oklch */ color: oklch(29.7% 0.102 273.9);

Tailwind

colors: {
  custom: {
    50: '#635f8d',
    500: '#1f255f',
    950: '#000000',
  },
}

SCSS

$custom: #1f255f;
$custom-light: #635f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f255f",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 95
  },
  "hsl": {
    "h": 234.375,
    "s": 50.794,
    "l": 24.706
  },
  "oklch": {
    "l": 0.29711,
    "c": 0.10223,
    "h": 273.9
  },
  "luminance": 0.02441
}

Semantic roles & 50–950 ramp

primary

#1F255F

secondary

#948C46

accent

#CD4EDA

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040C

muted

#7A797D

Preview Lab

Preview with #1F255F

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

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