#1D317E#1D317E

#1D317E is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.133 H 267.7°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#1D317E
RGB	rgb(29, 49, 126)
HSL	hsl(228, 63%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(77%, 61.1%, 0%, 50.6%)
CIE-LAB	lab(23.55, 21.38, -45.91)
CIE-LCH	lch(23.55, 50.64, 294.97°)
OKLab	oklab(34.91% -0.0053 -0.1325)
OKLCH	oklch(34.91% 0.133 267.7)
XYZ	xyz(5.3696, 3.9636, 20.2167)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D317E #7E6A1D

analogous

#1D617E #1D317E #391D7E

triadic

#1D317E #7E1D31 #317E1D

tetradic

#1D317E #7E1D61 #7E6A1D #1D7E39

square

#1D317E #7E1D61 #7E6A1D #1D7E39

split-complementary

#1D317E #7E391D #617E1D

monochromatic

#060A1B #121E4C #1D317E #2844B0 #4260D3

Accessibility & contrast

On white

11.71

#1D317E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D317E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D317E

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D317E	#FFFFFF	#000000	##FFFFFF
##1D317E	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D81

Deuteranopia (green-blind)

#00347D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d317e;
/* rgb */ color: rgb(29, 49, 126);
/* oklch */ color: oklch(34.9% 0.133 267.7);

Tailwind

colors: {
  custom: {
    50: '#6968a4',
    500: '#1d317e',
    950: '#000000',
  },
}

SCSS

$custom: #1d317e;
$custom-light: #6968a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d317e",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 126
  },
  "hsl": {
    "h": 227.629,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34907,
    "c": 0.13264,
    "h": 267.7
  },
  "luminance": 0.03964
}

Semantic roles & 50–950 ramp

primary

#1D317E

secondary

#B19B45

accent

#C442E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D317E

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

Preview Lab → · Contrast checker → · Palette generator →