#1D337C#1D337C

#1D337C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.1% C 0.127 H 266.9°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#1D337C
RGB	rgb(29, 51, 124)
HSL	hsl(226, 62%, 30%)
HSV	hsv(226, 77%, 49%)
CMYK	cmyk(76.6%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(23.95, 19.17, -44.00)
CIE-LCH	lch(23.95, 48.00, 293.54°)
OKLab	oklab(35.15% -0.0069 -0.1269)
OKLCH	oklch(35.15% 0.127 266.9)
XYZ	xyz(5.3273, 4.0835, 19.5723)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D337C #7C661D

analogous

#1D637C #1D337C #361D7C

triadic

#1D337C #7C1D33 #337C1D

tetradic

#1D337C #7C1D63 #7C661D #1D7C36

square

#1D337C #7C1D63 #7C661D #1D7C36

split-complementary

#1D337C #7C361D #637C1D

monochromatic

#060A19 #111F4A #1D337C #2947AE #4163D3

Accessibility & contrast

On white

11.56

#1D337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1D337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D337C

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D337C	#FFFFFF	#000000	##FFFFFF
##1D337C	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d337c;
/* rgb */ color: rgb(29, 51, 124);
/* oklch */ color: oklch(35.1% 0.127 266.9);

Tailwind

colors: {
  custom: {
    50: '#686aa3',
    500: '#1d337c',
    950: '#000000',
  },
}

SCSS

$custom: #1d337c;
$custom-light: #686aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d337c",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 226.105,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.3515,
    "c": 0.12708,
    "h": 266.9
  },
  "luminance": 0.04084
}

Semantic roles & 50–950 ramp

primary

#1D337C

secondary

#B09745

accent

#C043E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D337C

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

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