#1D257F#1D257F

#1D257F is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.7% C 0.149 H 271.1°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D257F
RGB	rgb(29, 37, 127)
HSL	hsl(235, 63%, 31%)
HSV	hsv(235, 77%, 50%)
CMYK	cmyk(77.2%, 70.9%, 0%, 50.2%)
CIE-LAB	lab(20.50, 29.98, -51.53)
CIE-LCH	lch(20.50, 59.62, 300.19°)
OKLab	oklab(32.69% 0.0028 -0.1491)
OKLCH	oklch(32.69% 0.149 271.1)
XYZ	xyz(4.9977, 3.1161, 20.4126)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D257F #7F771D

analogous

#1D567F #1D257F #461D7F

triadic

#1D257F #7F1D25 #257F1D

tetradic

#1D257F #7F1D56 #7F771D #1D7F46

square

#1D257F #7F1D56 #7F771D #1D7F46

split-complementary

#1D257F #7F461D #567F1D

monochromatic

#06081B #12164D #1D257F #2834B1 #424ED4

Accessibility & contrast

On white

12.94

#1D257F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1D257F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D257F

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D257F	#FFFFFF	#000000	##FFFFFF
##1D257F	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003682

Deuteranopia (green-blind)

#002D7D

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d257f;
/* rgb */ color: rgb(29, 37, 127);
/* oklch */ color: oklch(32.7% 0.149 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a60a5',
    500: '#1d257f',
    950: '#000000',
  },
}

SCSS

$custom: #1d257f;
$custom-light: #6a60a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d257f",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 127
  },
  "hsl": {
    "h": 235.102,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32694,
    "c": 0.14913,
    "h": 271.1
  },
  "luminance": 0.03117
}

Semantic roles & 50–950 ramp

primary

#1D257F

secondary

#B2A945

accent

#D842E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D257F

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

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