#1D3978#1D3978

#1D3978 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.1% C 0.113 H 263.7°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#1D3978
RGB	rgb(29, 57, 120)
HSL	hsl(222, 61%, 29%)
HSV	hsv(222, 76%, 47%)
CMYK	cmyk(75.8%, 52.5%, 0%, 52.9%)
CIE-LAB	lab(25.39, 13.32, -39.13)
CIE-LCH	lch(25.39, 41.33, 288.79°)
OKLab	oklab(36.14% -0.0124 -0.1125)
OKLCH	oklch(36.14% 0.113 263.7)
XYZ	xyz(5.3588, 4.5430, 18.3601)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3978 #785C1D

analogous

#1D6778 #1D3978 #2E1D78

triadic

#1D3978 #781D39 #39781D

tetradic

#1D3978 #781D67 #785C1D #1D782E

square

#1D3978 #781D67 #785C1D #1D782E

split-complementary

#1D3978 #782E1D #67781D

monochromatic

#060C19 #112247 #1D3978 #2950A9 #3F6CD1

Accessibility & contrast

On white

11.00

#1D3978 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1D3978 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3978

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3978	#FFFFFF	#000000	##FFFFFF
##1D3978	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13417A

Deuteranopia (green-blind)

#003877

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3978;
/* rgb */ color: rgb(29, 57, 120);
/* oklch */ color: oklch(36.1% 0.113 263.7);

Tailwind

colors: {
  custom: {
    50: '#676e9f',
    500: '#1d3978',
    950: '#000000',
  },
}

SCSS

$custom: #1d3978;
$custom-light: #676e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3978",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 120
  },
  "hsl": {
    "h": 221.538,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36144,
    "c": 0.11315,
    "h": 263.7
  },
  "luminance": 0.04544
}

Semantic roles & 50–950 ramp

primary

#1D3978

secondary

#AC8C45

accent

#B344E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #1D3978

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

Preview Lab → · Contrast checker → · Palette generator →