#1D2F8B#1D2F8B

#1D2F8B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.153 H 268.5°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#1D2F8B
RGB	rgb(29, 47, 139)
HSL	hsl(230, 65%, 33%)
HSV	hsv(230, 79%, 55%)
CMYK	cmyk(79.1%, 66.2%, 0%, 45.5%)
CIE-LAB	lab(24.19, 27.86, -53.02)
CIE-LCH	lch(24.19, 59.89, 297.72°)
OKLab	oklab(35.74% -0.0041 -0.1534)
OKLCH	oklch(35.74% 0.153 268.5)
XYZ	xyz(6.1818, 4.1576, 24.8978)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2F8B #8B791D

analogous

#1D668B #1D2F8B #421D8B

triadic

#1D2F8B #8B1D2F #2F8B1D

tetradic

#1D2F8B #8B1D66 #8B791D #1D8B42

square

#1D2F8B #8B1D66 #8B791D #1D8B42

split-complementary

#1D2F8B #8B421D #668B1D

monochromatic

#080D26 #121E58 #1D2F8B #2840BE #4961D9

Accessibility & contrast

On white

11.47

#1D2F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D2F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2F8B

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2F8B	#FFFFFF	#000000	##FFFFFF
##1D2F8B	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d2f8b;
/* rgb */ color: rgb(29, 47, 139);
/* oklch */ color: oklch(35.7% 0.153 268.5);

Tailwind

colors: {
  custom: {
    50: '#6c67ae',
    500: '#1d2f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d2f8b;
$custom-light: #6c67ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2f8b",
  "rgb": {
    "r": 29,
    "g": 47,
    "b": 139
  },
  "hsl": {
    "h": 230.182,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35739,
    "c": 0.15343,
    "h": 268.5
  },
  "luminance": 0.04158
}

Semantic roles & 50–950 ramp

primary

#1D2F8B

secondary

#BBA849

accent

#CD3FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D2F8B

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

Preview Lab → · Contrast checker → · Palette generator →