#1D2588#1D2588

#1D2588 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.161 H 270.6°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#1D2588
RGB	rgb(29, 37, 136)
HSL	hsl(236, 65%, 32%)
HSV	hsv(236, 79%, 53%)
CMYK	cmyk(78.7%, 72.8%, 0%, 46.7%)
CIE-LAB	lab(21.44, 33.32, -55.66)
CIE-LCH	lch(21.44, 64.87, 300.91°)
OKLab	oklab(33.65% 0.0017 -0.1611)
OKLCH	oklch(33.65% 0.161 270.6)
XYZ	xyz(5.6107, 3.3613, 23.6409)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2588 #88801D

analogous

#1D5B88 #1D2588 #4B1D88

triadic

#1D2588 #881D25 #25881D

tetradic

#1D2588 #881D5B #88801D #1D884B

square

#1D2588 #881D5B #88801D #1D884B

split-complementary

#1D2588 #884B1D #5B881D

monochromatic

#070A23 #121756 #1D2588 #2833BA #4852D8

Accessibility & contrast

On white

12.56

#1D2588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D2588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2588

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2588	#FFFFFF	#000000	##FFFFFF
##1D2588	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398B

Deuteranopia (green-blind)

#002E86

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d2588;
/* rgb */ color: rgb(29, 37, 136);
/* oklch */ color: oklch(33.6% 0.161 270.6);

Tailwind

colors: {
  custom: {
    50: '#6c60ac',
    500: '#1d2588',
    950: '#000000',
  },
}

SCSS

$custom: #1d2588;
$custom-light: #6c60ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2588",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 136
  },
  "hsl": {
    "h": 235.514,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33649,
    "c": 0.16116,
    "h": 270.6
  },
  "luminance": 0.03362
}

Semantic roles & 50–950 ramp

primary

#1D2588

secondary

#BAB147

accent

#DB40E8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1D2588

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

Preview Lab → · Contrast checker → · Palette generator →