#1D2E8B#1D2E8B

#1D2E8B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.6% C 0.155 H 268.7°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#1D2E8B
RGB	rgb(29, 46, 139)
HSL	hsl(231, 65%, 33%)
HSV	hsv(231, 79%, 55%)
CMYK	cmyk(79.1%, 66.9%, 0%, 45.5%)
CIE-LAB	lab(23.93, 28.54, -53.44)
CIE-LCH	lch(23.93, 60.58, 298.10°)
OKLab	oklab(35.55% -0.0035 -0.1546)
OKLCH	oklch(35.55% 0.155 268.7)
XYZ	xyz(6.1423, 4.0786, 24.8846)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2E8B #8B7A1D

analogous

#1D658B #1D2E8B #431D8B

triadic

#1D2E8B #8B1D2E #2E8B1D

tetradic

#1D2E8B #8B1D65 #8B7A1D #1D8B43

square

#1D2E8B #8B1D65 #8B7A1D #1D8B43

split-complementary

#1D2E8B #8B431D #658B1D

monochromatic

#080C26 #121D58 #1D2E8B #283FBE #4960D9

Accessibility & contrast

On white

11.57

#1D2E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1D2E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2E8B

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2E8B	#FFFFFF	#000000	##FFFFFF
##1D2E8B	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d2e8b;
/* rgb */ color: rgb(29, 46, 139);
/* oklch */ color: oklch(35.6% 0.155 268.7);

Tailwind

colors: {
  custom: {
    50: '#6c66ae',
    500: '#1d2e8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d2e8b;
$custom-light: #6c66ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2e8b",
  "rgb": {
    "r": 29,
    "g": 46,
    "b": 139
  },
  "hsl": {
    "h": 230.727,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35551,
    "c": 0.15466,
    "h": 268.7
  },
  "luminance": 0.04079
}

Semantic roles & 50–950 ramp

primary

#1D2E8B

secondary

#BBAA49

accent

#CE3FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D2E8B

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

Preview Lab → · Contrast checker → · Palette generator →