#1D2D8A#1D2D8A

#1D2D8A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.3% C 0.155 H 268.9°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D2D8A
RGB	rgb(29, 45, 138)
HSL	hsl(231, 65%, 33%)
HSV	hsv(231, 79%, 54%)
CMYK	cmyk(79%, 67.4%, 0%, 45.9%)
CIE-LAB	lab(23.58, 28.83, -53.39)
CIE-LCH	lch(23.58, 60.67, 298.37°)
OKLab	oklab(35.27% -0.0028 -0.1545)
OKLCH	oklch(35.27% 0.155 268.9)
XYZ	xyz(6.0309, 3.9723, 24.4887)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2D8A #8A7A1D

analogous

#1D638A #1D2D8A #441D8A

triadic

#1D2D8A #8A1D2D #2D8A1D

tetradic

#1D2D8A #8A1D63 #8A7A1D #1D8A44

square

#1D2D8A #8A1D63 #8A7A1D #1D8A44

split-complementary

#1D2D8A #8A441D #638A1D

monochromatic

#080C25 #121D57 #1D2D8A #283DBD #495ED9

Accessibility & contrast

On white

11.70

#1D2D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D2D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2D8A

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2D8A	#FFFFFF	#000000	##FFFFFF
##1D2D8A	1.00	11.70	1.79	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8D

Deuteranopia (green-blind)

#003388

Tritanopia (blue-blind)

#004657

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d2d8a;
/* rgb */ color: rgb(29, 45, 138);
/* oklch */ color: oklch(35.3% 0.155 268.9);

Tailwind

colors: {
  custom: {
    50: '#6c66ad',
    500: '#1d2d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d2d8a;
$custom-light: #6c66ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2d8a",
  "rgb": {
    "r": 29,
    "g": 45,
    "b": 138
  },
  "hsl": {
    "h": 231.193,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35265,
    "c": 0.15452,
    "h": 268.9
  },
  "luminance": 0.03973
}

Semantic roles & 50–950 ramp

primary

#1D2D8A

secondary

#BBAA48

accent

#CF40E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1D2D8A

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

Preview Lab → · Contrast checker → · Palette generator →