#1D3283#1D3283

#1D3283 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.138 H 267.5°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#1D3283
RGB	rgb(29, 50, 131)
HSL	hsl(228, 64%, 31%)
HSV	hsv(228, 78%, 51%)
CMYK	cmyk(77.9%, 61.8%, 0%, 48.6%)
CIE-LAB	lab(24.26, 22.67, -47.90)
CIE-LCH	lch(24.26, 52.99, 295.32°)
OKLab	oklab(35.57% -0.006 -0.1383)
OKLCH	oklch(35.57% 0.138 267.5)
XYZ	xyz(5.7426, 4.1805, 21.9726)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3283 #836E1D

analogous

#1D6583 #1D3283 #3B1D83

triadic

#1D3283 #831D32 #32831D

tetradic

#1D3283 #831D65 #836E1D #1D833B

square

#1D3283 #831D65 #836E1D #1D833B

split-complementary

#1D3283 #833B1D #65831D

monochromatic

#070C1F #121F51 #1D3283 #2845B5 #4563D6

Accessibility & contrast

On white

11.44

#1D3283 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1D3283 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3283

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3283	#FFFFFF	#000000	##FFFFFF
##1D3283	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F86

Deuteranopia (green-blind)

#003581

Tritanopia (blue-blind)

#004755

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d3283;
/* rgb */ color: rgb(29, 50, 131);
/* oklch */ color: oklch(35.6% 0.138 267.5);

Tailwind

colors: {
  custom: {
    50: '#6a69a8',
    500: '#1d3283',
    950: '#000000',
  },
}

SCSS

$custom: #1d3283;
$custom-light: #6a69a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3283",
  "rgb": {
    "r": 29,
    "g": 50,
    "b": 131
  },
  "hsl": {
    "h": 227.647,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3557,
    "c": 0.13848,
    "h": 267.5
  },
  "luminance": 0.04181
}

Semantic roles & 50–950 ramp

primary

#1D3283

secondary

#B69F46

accent

#C541E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1D3283

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

Preview Lab → · Contrast checker → · Palette generator →