#1F255E#1F255E

#1F255E is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.6% C 0.101 H 274.0°. Best body text is #FFFFFF at 14.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F255E
RGB	rgb(31, 37, 94)
HSL	hsl(234, 50%, 25%)
HSV	hsv(234, 67%, 37%)
CMYK	cmyk(67%, 60.6%, 0%, 63.1%)
CIE-LAB	lab(17.56, 17.56, -34.95)
CIE-LCH	lch(17.56, 39.11, 296.67°)
OKLab	oklab(29.62% 0.007 -0.1004)
OKLCH	oklch(29.62% 0.101 274)
XYZ	xyz(3.2464, 2.4223, 10.8840)
Luminance	0.0242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F255E #5E581F

analogous

#1F455E #1F255E #391F5E

triadic

#1F255E #5E1F25 #255E1F

tetradic

#1F255E #5E1F45 #5E581F #1F5E39

square

#1F255E #5E1F45 #5E581F #1F5E39

split-complementary

#1F255E #5E391F #455E1F

monochromatic

#080917 #101330 #1F255E #2E378C #3D49BA

Accessibility & contrast

On white

14.15

#1F255E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1F255E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F255E

14.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F255E	#FFFFFF	#000000	##FFFFFF
##1F255E	1.00	14.15	1.48	14.15
#FFFFFF	14.15	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E60

Deuteranopia (green-blind)

#00285D

Tritanopia (blue-blind)

#00333D

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f255e;
/* rgb */ color: rgb(31, 37, 94);
/* oklch */ color: oklch(29.6% 0.101 274.0);

Tailwind

colors: {
  custom: {
    50: '#635f8c',
    500: '#1f255e',
    950: '#000000',
  },
}

SCSS

$custom: #1f255e;
$custom-light: #635f8c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f255e",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 94
  },
  "hsl": {
    "h": 234.286,
    "s": 50.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.29623,
    "c": 0.10068,
    "h": 274
  },
  "luminance": 0.02423
}

Semantic roles & 50–950 ramp

primary

#1F255E

secondary

#938B46

accent

#CD4EDA

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040C

muted

#7A797D

Preview Lab

Preview with #1F255E

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

Preview Lab → · Contrast checker → · Palette generator →