#1D317D#1D317D

#1D317D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.131 H 267.7°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#1D317D
RGB	rgb(29, 49, 125)
HSL	hsl(228, 62%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(76.8%, 60.8%, 0%, 51%)
CIE-LAB	lab(23.47, 20.98, -45.42)
CIE-LCH	lch(23.47, 50.03, 294.79°)
OKLab	oklab(34.82% -0.0053 -0.1311)
OKLCH	oklch(34.82% 0.131 267.7)
XYZ	xyz(5.3054, 3.9379, 19.8786)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D317D #7D691D

analogous

#1D617D #1D317D #391D7D

triadic

#1D317D #7D1D31 #317D1D

tetradic

#1D317D #7D1D61 #7D691D #1D7D39

square

#1D317D #7D1D61 #7D691D #1D7D39

split-complementary

#1D317D #7D391D #617D1D

monochromatic

#060A1A #111E4B #1D317D #2944AF #4160D3

Accessibility & contrast

On white

11.75

#1D317D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D317D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D317D

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D317D	#FFFFFF	#000000	##FFFFFF
##1D317D	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C80

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d317d;
/* rgb */ color: rgb(29, 49, 125);
/* oklch */ color: oklch(34.8% 0.131 267.7);

Tailwind

colors: {
  custom: {
    50: '#6868a3',
    500: '#1d317d',
    950: '#000000',
  },
}

SCSS

$custom: #1d317d;
$custom-light: #6868a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d317d",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 125
  },
  "hsl": {
    "h": 227.5,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34816,
    "c": 0.13119,
    "h": 267.7
  },
  "luminance": 0.03939
}

Semantic roles & 50–950 ramp

primary

#1D317D

secondary

#B19A45

accent

#C342E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D317D

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

Preview Lab → · Contrast checker → · Palette generator →