#1D3E88#1D3E88

#1D3E88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.130 H 263.4°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E88
RGB	rgb(29, 62, 136)
HSL	hsl(221, 65%, 32%)
HSV	hsv(221, 79%, 53%)
CMYK	cmyk(78.7%, 54.4%, 0%, 46.7%)
CIE-LAB	lab(28.07, 16.30, -44.82)
CIE-LCH	lch(28.07, 47.69, 289.98°)
OKLab	oklab(38.56% -0.0149 -0.1291)
OKLCH	oklch(38.56% 0.13 263.4)
XYZ	xyz(6.6717, 5.4833, 23.9945)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E88 #88671D

analogous

#1D7488 #1D3E88 #311D88

triadic

#1D3E88 #881D3E #3E881D

tetradic

#1D3E88 #881D74 #88671D #1D8831

square

#1D3E88 #881D74 #88671D #1D8831

split-complementary

#1D3E88 #88311D #74881D

monochromatic

#071023 #122756 #1D3E88 #2855BA #4874D8

Accessibility & contrast

On white

10.02

#1D3E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1D3E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E88

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E88	#FFFFFF	#000000	##FFFFFF
##1D3E88	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07478B

Deuteranopia (green-blind)

#003E87

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3e88;
/* rgb */ color: rgb(29, 62, 136);
/* oklch */ color: oklch(38.6% 0.130 263.4);

Tailwind

colors: {
  custom: {
    50: '#6a72ab',
    500: '#1d3e88',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e88;
$custom-light: #6a72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e88",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 136
  },
  "hsl": {
    "h": 221.495,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38563,
    "c": 0.12996,
    "h": 263.4
  },
  "luminance": 0.05484
}

Semantic roles & 50–950 ramp

primary

#1D3E88

secondary

#BA9647

accent

#B440E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D3E88

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

Preview Lab → · Contrast checker → · Palette generator →