#1D2D8B#1D2D8B

#1D2D8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.156 H 268.9°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#1D2D8B
RGB	rgb(29, 45, 139)
HSL	hsl(231, 65%, 33%)
HSV	hsv(231, 79%, 55%)
CMYK	cmyk(79.1%, 67.6%, 0%, 45.5%)
CIE-LAB	lab(23.68, 29.21, -53.85)
CIE-LCH	lch(23.68, 61.26, 298.48°)
OKLab	oklab(35.37% -0.0029 -0.1558)
OKLCH	oklch(35.37% 0.156 268.9)
XYZ	xyz(6.1037, 4.0014, 24.8718)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2D8B #8B7B1D

analogous

#1D648B #1D2D8B #441D8B

triadic

#1D2D8B #8B1D2D #2D8B1D

tetradic

#1D2D8B #8B1D64 #8B7B1D #1D8B44

square

#1D2D8B #8B1D64 #8B7B1D #1D8B44

split-complementary

#1D2D8B #8B441D #648B1D

monochromatic

#080C26 #121D58 #1D2D8B #283DBE #495ED9

Accessibility & contrast

On white

11.66

#1D2D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1D2D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2D8B

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2D8B	#FFFFFF	#000000	##FFFFFF
##1D2D8B	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003389

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d2d8b;
/* rgb */ color: rgb(29, 45, 139);
/* oklch */ color: oklch(35.4% 0.156 268.9);

Tailwind

colors: {
  custom: {
    50: '#6c66ae',
    500: '#1d2d8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d2d8b;
$custom-light: #6c66ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2d8b",
  "rgb": {
    "r": 29,
    "g": 45,
    "b": 139
  },
  "hsl": {
    "h": 231.273,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35365,
    "c": 0.15588,
    "h": 268.9
  },
  "luminance": 0.04002
}

Semantic roles & 50–950 ramp

primary

#1D2D8B

secondary

#BBAB49

accent

#D03FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D2D8B

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

Preview Lab → · Contrast checker → · Palette generator →