#1D3172#1D3172

#1D3172 is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.8% C 0.115 H 267.1°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#1D3172
RGB	rgb(29, 49, 114)
HSL	hsl(226, 59%, 28%)
HSV	hsv(226, 75%, 45%)
CMYK	cmyk(74.6%, 57%, 0%, 55.3%)
CIE-LAB	lab(22.56, 16.56, -39.89)
CIE-LCH	lch(22.56, 43.19, 292.54°)
OKLab	oklab(33.85% -0.0058 -0.1148)
OKLCH	oklch(33.85% 0.115 267.1)
XYZ	xyz(4.6412, 3.6723, 16.3805)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3172 #725E1D

analogous

#1D5B72 #1D3172 #331D72

triadic

#1D3172 #721D31 #31721D

tetradic

#1D3172 #721D5B #725E1D #1D7233

square

#1D3172 #721D5B #725E1D #1D7233

split-complementary

#1D3172 #72331D #5B721D

monochromatic

#060A18 #111C41 #1D3172 #2946A3 #3C5ECD

Accessibility & contrast

On white

12.11

#1D3172 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1D3172 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3172

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3172	#FFFFFF	#000000	##FFFFFF
##1D3172	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A74

Deuteranopia (green-blind)

#003271

Tritanopia (blue-blind)

#00414C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d3172;
/* rgb */ color: rgb(29, 49, 114);
/* oklch */ color: oklch(33.8% 0.115 267.1);

Tailwind

colors: {
  custom: {
    50: '#66689b',
    500: '#1d3172',
    950: '#000000',
  },
}

SCSS

$custom: #1d3172;
$custom-light: #66689b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3172",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 114
  },
  "hsl": {
    "h": 225.882,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33849,
    "c": 0.115,
    "h": 267.1
  },
  "luminance": 0.03673
}

Semantic roles & 50–950 ramp

primary

#1D3172

secondary

#A68F45

accent

#BE45E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3172

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

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