#1D3582#1D3582

#1D3582 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.133 H 266.5°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#1D3582
RGB	rgb(29, 53, 130)
HSL	hsl(226, 64%, 31%)
HSV	hsv(226, 78%, 51%)
CMYK	cmyk(77.7%, 59.2%, 0%, 49%)
CIE-LAB	lab(25.01, 20.17, -46.05)
CIE-LCH	lch(25.01, 50.27, 293.66°)
OKLab	oklab(36.1% -0.0082 -0.1329)
OKLCH	oklch(36.1% 0.133 266.5)
XYZ	xyz(5.8077, 4.4185, 21.6615)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3582 #826A1D

analogous

#1D6782 #1D3582 #371D82

triadic

#1D3582 #821D35 #35821D

tetradic

#1D3582 #821D67 #826A1D #1D8237

square

#1D3582 #821D67 #826A1D #1D8237

split-complementary

#1D3582 #82371D #67821D

monochromatic

#070C1E #122150 #1D3582 #2849B4 #4467D5

Accessibility & contrast

On white

11.15

#1D3582 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1D3582 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3582

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3582	#FFFFFF	#000000	##FFFFFF
##1D3582	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004085

Deuteranopia (green-blind)

#003780

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3582;
/* rgb */ color: rgb(29, 53, 130);
/* oklch */ color: oklch(36.1% 0.133 266.5);

Tailwind

colors: {
  custom: {
    50: '#696ba7',
    500: '#1d3582',
    950: '#000000',
  },
}

SCSS

$custom: #1d3582;
$custom-light: #696ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3582",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 130
  },
  "hsl": {
    "h": 225.743,
    "s": 63.522,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36103,
    "c": 0.13313,
    "h": 266.5
  },
  "luminance": 0.04419
}

Semantic roles & 50–950 ramp

primary

#1D3582

secondary

#B59B46

accent

#BF41E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D3582

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

Preview Lab → · Contrast checker → · Palette generator →