#1D257E#1D257E

#1D257E is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.6% C 0.148 H 271.1°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D257E
RGB	rgb(29, 37, 126)
HSL	hsl(235, 63%, 30%)
HSV	hsv(235, 77%, 49%)
CMYK	cmyk(77%, 70.6%, 0%, 50.6%)
CIE-LAB	lab(20.40, 29.60, -51.06)
CIE-LCH	lch(20.40, 59.02, 300.10°)
OKLab	oklab(32.59% 0.0029 -0.1477)
OKLCH	oklch(32.59% 0.148 271.1)
XYZ	xyz(4.9329, 3.0902, 20.0711)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D257E #7E761D

analogous

#1D557E #1D257E #461D7E

triadic

#1D257E #7E1D25 #257E1D

tetradic

#1D257E #7E1D55 #7E761D #1D7E46

square

#1D257E #7E1D55 #7E761D #1D7E46

split-complementary

#1D257E #7E461D #557E1D

monochromatic

#06081B #12164C #1D257E #2834B0 #424ED3

Accessibility & contrast

On white

12.98

#1D257E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1D257E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D257E

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D257E	#FFFFFF	#000000	##FFFFFF
##1D257E	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003681

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d257e;
/* rgb */ color: rgb(29, 37, 126);
/* oklch */ color: oklch(32.6% 0.148 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a60a4',
    500: '#1d257e',
    950: '#000000',
  },
}

SCSS

$custom: #1d257e;
$custom-light: #6a60a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d257e",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 126
  },
  "hsl": {
    "h": 235.052,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3259,
    "c": 0.14776,
    "h": 271.1
  },
  "luminance": 0.03091
}

Semantic roles & 50–950 ramp

primary

#1D257E

secondary

#B1A945

accent

#D842E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D257E

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

Preview Lab → · Contrast checker → · Palette generator →