#1D3979#1D3979

#1D3979 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.115 H 263.8°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#1D3979
RGB	rgb(29, 57, 121)
HSL	hsl(222, 61%, 29%)
HSV	hsv(222, 76%, 47%)
CMYK	cmyk(76%, 52.9%, 0%, 52.5%)
CIE-LAB	lab(25.46, 13.72, -39.64)
CIE-LCH	lch(25.46, 41.95, 289.09°)
OKLab	oklab(36.22% -0.0123 -0.114)
OKLCH	oklch(36.22% 0.115 263.8)
XYZ	xyz(5.4198, 4.5674, 18.6814)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3979 #795D1D

analogous

#1D6779 #1D3979 #2F1D79

triadic

#1D3979 #791D39 #39791D

tetradic

#1D3979 #791D67 #795D1D #1D792F

square

#1D3979 #791D67 #795D1D #1D792F

split-complementary

#1D3979 #792F1D #67791D

monochromatic

#060C19 #112248 #1D3979 #2950AA #3F6CD1

Accessibility & contrast

On white

10.97

#1D3979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1D3979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3979

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3979	#FFFFFF	#000000	##FFFFFF
##1D3979	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11417B

Deuteranopia (green-blind)

#003878

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3979;
/* rgb */ color: rgb(29, 57, 121);
/* oklch */ color: oklch(36.2% 0.115 263.8);

Tailwind

colors: {
  custom: {
    50: '#676ea0',
    500: '#1d3979',
    950: '#000000',
  },
}

SCSS

$custom: #1d3979;
$custom-light: #676ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3979",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 121
  },
  "hsl": {
    "h": 221.739,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36224,
    "c": 0.11464,
    "h": 263.8
  },
  "luminance": 0.04568
}

Semantic roles & 50–950 ramp

primary

#1D3979

secondary

#AD8D45

accent

#B343E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1D3979

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

Preview Lab → · Contrast checker → · Palette generator →