#1D3370#1D3370

#1D3370 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.109 H 265.9°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#1D3370
RGB	rgb(29, 51, 112)
HSL	hsl(224, 59%, 28%)
HSV	hsv(224, 74%, 44%)
CMYK	cmyk(74.1%, 54.5%, 0%, 56.1%)
CIE-LAB	lab(22.99, 14.33, -37.91)
CIE-LCH	lch(22.99, 40.52, 290.70°)
OKLab	oklab(34.13% -0.0079 -0.109)
OKLCH	oklch(34.13% 0.109 265.9)
XYZ	xyz(4.6141, 3.7982, 15.8161)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3370 #705A1D

analogous

#1D5D70 #1D3370 #301D70

triadic

#1D3370 #701D33 #33701D

tetradic

#1D3370 #701D5D #705A1D #1D7030

square

#1D3370 #701D5D #705A1D #1D7030

split-complementary

#1D3370 #70301D #5D701D

monochromatic

#060B18 #101D3F #1D3370 #2A49A1 #3B62CC

Accessibility & contrast

On white

11.93

#1D3370 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1D3370 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3370

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3370	#FFFFFF	#000000	##FFFFFF
##1D3370	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3B72

Deuteranopia (green-blind)

#00336F

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d3370;
/* rgb */ color: rgb(29, 51, 112);
/* oklch */ color: oklch(34.1% 0.109 265.9);

Tailwind

colors: {
  custom: {
    50: '#656a9a',
    500: '#1d3370',
    950: '#000000',
  },
}

SCSS

$custom: #1d3370;
$custom-light: #656a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3370",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 112
  },
  "hsl": {
    "h": 224.096,
    "s": 58.865,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3413,
    "c": 0.10924,
    "h": 265.9
  },
  "luminance": 0.03799
}

Semantic roles & 50–950 ramp

primary

#1D3370

secondary

#A48B44

accent

#B946E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3370

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

Preview Lab → · Contrast checker → · Palette generator →