#1D277E#1D277E

#1D277E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.0% C 0.145 H 270.7°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#1D277E
RGB	rgb(29, 39, 126)
HSL	hsl(234, 63%, 30%)
HSV	hsv(234, 77%, 49%)
CMYK	cmyk(77%, 69%, 0%, 50.6%)
CIE-LAB	lab(20.90, 28.27, -50.25)
CIE-LCH	lch(20.90, 57.65, 299.36°)
OKLab	oklab(32.95% 0.0017 -0.1453)
OKLCH	oklch(32.95% 0.145 270.7)
XYZ	xyz(4.9968, 3.2181, 20.0924)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D277E #7E741D

analogous

#1D587E #1D277E #431D7E

triadic

#1D277E #7E1D27 #277E1D

tetradic

#1D277E #7E1D58 #7E741D #1D7E43

square

#1D277E #7E1D58 #7E741D #1D7E43

split-complementary

#1D277E #7E431D #587E1D

monochromatic

#06081B #12184C #1D277E #2836B0 #4251D3

Accessibility & contrast

On white

12.78

#1D277E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1D277E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D277E

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D277E	#FFFFFF	#000000	##FFFFFF
##1D277E	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002E7C

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d277e;
/* rgb */ color: rgb(29, 39, 126);
/* oklch */ color: oklch(33.0% 0.145 270.7);

Tailwind

colors: {
  custom: {
    50: '#6a61a4',
    500: '#1d277e',
    950: '#000000',
  },
}

SCSS

$custom: #1d277e;
$custom-light: #6a61a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d277e",
  "rgb": {
    "r": 29,
    "g": 39,
    "b": 126
  },
  "hsl": {
    "h": 233.814,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3295,
    "c": 0.14536,
    "h": 270.7
  },
  "luminance": 0.03219
}

Semantic roles & 50–950 ramp

primary

#1D277E

secondary

#B1A645

accent

#D542E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D277E

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

Preview Lab → · Contrast checker → · Palette generator →