#1D377A#1D377A

#1D377A is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.9% C 0.119 H 265.0°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#1D377A
RGB	rgb(29, 55, 122)
HSL	hsl(223, 62%, 30%)
HSV	hsv(223, 76%, 48%)
CMYK	cmyk(76.2%, 54.9%, 0%, 52.2%)
CIE-LAB	lab(24.95, 15.54, -41.11)
CIE-LCH	lch(24.95, 43.95, 290.70°)
OKLab	oklab(35.85% -0.0104 -0.1183)
OKLCH	oklch(35.85% 0.119 265)
XYZ	xyz(5.3845, 4.3981, 18.9737)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D377A #7A601D

analogous

#1D667A #1D377A #321D7A

triadic

#1D377A #7A1D37 #377A1D

tetradic

#1D377A #7A1D66 #7A601D #1D7A32

square

#1D377A #7A1D66 #7A601D #1D7A32

split-complementary

#1D377A #7A321D #667A1D

monochromatic

#060B19 #112149 #1D377A #294DAB #4069D2

Accessibility & contrast

On white

11.17

#1D377A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1D377A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D377A

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D377A	#FFFFFF	#000000	##FFFFFF
##1D377A	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07407C

Deuteranopia (green-blind)

#003779

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d377a;
/* rgb */ color: rgb(29, 55, 122);
/* oklch */ color: oklch(35.9% 0.119 265.0);

Tailwind

colors: {
  custom: {
    50: '#676da1',
    500: '#1d377a',
    950: '#000000',
  },
}

SCSS

$custom: #1d377a;
$custom-light: #676da1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d377a",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 122
  },
  "hsl": {
    "h": 223.226,
    "s": 61.589,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35854,
    "c": 0.11879,
    "h": 265
  },
  "luminance": 0.04399
}

Semantic roles & 50–950 ramp

primary

#1D377A

secondary

#AE9045

accent

#B843E5

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D377A

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

Preview Lab → · Contrast checker → · Palette generator →