#1D237F#1D237F

#1D237F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.3% C 0.151 H 271.5°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#1D237F
RGB	rgb(29, 35, 127)
HSL	hsl(236, 63%, 31%)
HSV	hsv(236, 77%, 50%)
CMYK	cmyk(77.2%, 72.4%, 0%, 50.2%)
CIE-LAB	lab(20.02, 31.28, -52.32)
CIE-LCH	lch(20.02, 60.96, 300.88°)
OKLab	oklab(32.35% 0.004 -0.1514)
OKLCH	oklch(32.35% 0.151 271.5)
XYZ	xyz(4.9372, 2.9951, 20.3925)
Luminance	0.0300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D237F #7F791D

analogous

#1D547F #1D237F #481D7F

triadic

#1D237F #7F1D23 #237F1D

tetradic

#1D237F #7F1D54 #7F791D #1D7F48

square

#1D237F #7F1D54 #7F791D #1D7F48

split-complementary

#1D237F #7F481D #547F1D

monochromatic

#06081B #12154D #1D237F #2831B1 #424BD4

Accessibility & contrast

On white

13.13

#1D237F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1D237F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D237F

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D237F	#FFFFFF	#000000	##FFFFFF
##1D237F	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003582

Deuteranopia (green-blind)

#002C7D

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d237f;
/* rgb */ color: rgb(29, 35, 127);
/* oklch */ color: oklch(32.3% 0.151 271.5);

Tailwind

colors: {
  custom: {
    50: '#6a5ea5',
    500: '#1d237f',
    950: '#000000',
  },
}

SCSS

$custom: #1d237f;
$custom-light: #6a5ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d237f",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 127
  },
  "hsl": {
    "h": 236.327,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32349,
    "c": 0.15145,
    "h": 271.5
  },
  "luminance": 0.02996
}

Semantic roles & 50–950 ramp

primary

#1D237F

secondary

#B2AC45

accent

#DC42E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1D237F

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

Preview Lab → · Contrast checker → · Palette generator →