#1F255C#1F255C

#1F255C is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.4% C 0.098 H 274.1°. Best body text is #FFFFFF at 14.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F255C
RGB	rgb(31, 37, 92)
HSL	hsl(234, 50%, 24%)
HSV	hsv(234, 66%, 36%)
CMYK	cmyk(66.3%, 59.8%, 0%, 63.9%)
CIE-LAB	lab(17.40, 16.78, -33.89)
CIE-LCH	lch(17.40, 37.81, 296.34°)
OKLab	oklab(29.45% 0.0069 -0.0973)
OKLCH	oklch(29.45% 0.098 274.1)
XYZ	xyz(3.1578, 2.3869, 10.4174)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F255C #5C561F

analogous

#1F445C #1F255C #381F5C

triadic

#1F255C #5C1F25 #255C1F

tetradic

#1F255C #5C1F44 #5C561F #1F5C38

square

#1F255C #5C1F44 #5C561F #1F5C38

split-complementary

#1F255C #5C381F #445C1F

monochromatic

#080917 #10132E #1F255C #2E378A #3E4AB8

Accessibility & contrast

On white

14.21

#1F255C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1F255C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F255C

14.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F255C	#FFFFFF	#000000	##FFFFFF
##1F255C	1.00	14.21	1.48	14.21
#FFFFFF	14.21	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D5E

Deuteranopia (green-blind)

#00285B

Tritanopia (blue-blind)

#00323C

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f255c;
/* rgb */ color: rgb(31, 37, 92);
/* oklch */ color: oklch(29.4% 0.098 274.1);

Tailwind

colors: {
  custom: {
    50: '#625f8b',
    500: '#1f255c',
    950: '#000000',
  },
}

SCSS

$custom: #1f255c;
$custom-light: #625f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f255c",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 92
  },
  "hsl": {
    "h": 234.098,
    "s": 49.593,
    "l": 24.118
  },
  "oklch": {
    "l": 0.29448,
    "c": 0.09756,
    "h": 274.1
  },
  "luminance": 0.02387
}

Semantic roles & 50–950 ramp

primary

#1F255C

secondary

#918946

accent

#CC4FD9

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05040C

muted

#7A797D

Preview Lab

Preview with #1F255C

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

Preview Lab → · Contrast checker → · Palette generator →