#1D3288#1D3288

#1D3288 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.146 H 267.7°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#1D3288
RGB	rgb(29, 50, 136)
HSL	hsl(228, 65%, 32%)
HSV	hsv(228, 79%, 53%)
CMYK	cmyk(78.7%, 63.2%, 0%, 46.7%)
CIE-LAB	lab(24.70, 24.64, -50.30)
CIE-LCH	lch(24.70, 56.02, 296.10°)
OKLab	oklab(36.03% -0.006 -0.1454)
OKLCH	oklch(36.03% 0.146 267.7)
XYZ	xyz(6.0897, 4.3193, 23.8005)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3288 #88731D

analogous

#1D6888 #1D3288 #3D1D88

triadic

#1D3288 #881D32 #32881D

tetradic

#1D3288 #881D68 #88731D #1D883D

square

#1D3288 #881D68 #88731D #1D883D

split-complementary

#1D3288 #883D1D #68881D

monochromatic

#070D23 #121F56 #1D3288 #2845BA #4864D8

Accessibility & contrast

On white

11.27

#1D3288 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D3288 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3288

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3288	#FFFFFF	#000000	##FFFFFF
##1D3288	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408B

Deuteranopia (green-blind)

#003686

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3288;
/* rgb */ color: rgb(29, 50, 136);
/* oklch */ color: oklch(36.0% 0.146 267.7);

Tailwind

colors: {
  custom: {
    50: '#6b69ab',
    500: '#1d3288',
    950: '#000000',
  },
}

SCSS

$custom: #1d3288;
$custom-light: #6b69ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3288",
  "rgb": {
    "r": 29,
    "g": 50,
    "b": 136
  },
  "hsl": {
    "h": 228.224,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36034,
    "c": 0.14553,
    "h": 267.7
  },
  "luminance": 0.0432
}

Semantic roles & 50–950 ramp

primary

#1D3288

secondary

#BAA347

accent

#C740E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1D3288

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

Preview Lab → · Contrast checker → · Palette generator →