#1D377C#1D377C

#1D377C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.122 H 265.2°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#1D377C
RGB	rgb(29, 55, 124)
HSL	hsl(224, 62%, 30%)
HSV	hsv(224, 77%, 49%)
CMYK	cmyk(76.6%, 55.6%, 0%, 51.4%)
CIE-LAB	lab(25.10, 16.35, -42.13)
CIE-LCH	lch(25.10, 45.19, 291.21°)
OKLab	oklab(36.02% -0.0102 -0.1213)
OKLCH	oklch(36.02% 0.122 265.2)
XYZ	xyz(5.5097, 4.4482, 19.6331)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D377C #7C621D

analogous

#1D677C #1D377C #321D7C

triadic

#1D377C #7C1D37 #377C1D

tetradic

#1D377C #7C1D67 #7C621D #1D7C32

square

#1D377C #7C1D67 #7C621D #1D7C32

split-complementary

#1D377C #7C321D #677C1D

monochromatic

#060B19 #11214A #1D377C #294DAE #4169D3

Accessibility & contrast

On white

11.11

#1D377C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D377C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D377C

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D377C	#FFFFFF	#000000	##FFFFFF
##1D377C	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03407E

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d377c;
/* rgb */ color: rgb(29, 55, 124);
/* oklch */ color: oklch(36.0% 0.122 265.2);

Tailwind

colors: {
  custom: {
    50: '#686da2',
    500: '#1d377c',
    950: '#000000',
  },
}

SCSS

$custom: #1d377c;
$custom-light: #686da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d377c",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 124
  },
  "hsl": {
    "h": 223.579,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.3602,
    "c": 0.12174,
    "h": 265.2
  },
  "luminance": 0.04449
}

Semantic roles & 50–950 ramp

primary

#1D377C

secondary

#B09245

accent

#B943E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D377C

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

Preview Lab → · Contrast checker → · Palette generator →