#1D2183#1D2183

#1D2183 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.5% C 0.159 H 271.6°. Best body text is #FFFFFF at 13.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D2183
RGB	rgb(29, 33, 131)
HSL	hsl(238, 64%, 31%)
HSV	hsv(238, 78%, 51%)
CMYK	cmyk(77.9%, 74.8%, 0%, 48.6%)
CIE-LAB	lab(19.99, 34.01, -54.90)
CIE-LCH	lch(19.99, 64.58, 301.78°)
OKLab	oklab(32.45% 0.0045 -0.1589)
OKLCH	oklch(32.45% 0.159 271.6)
XYZ	xyz(5.1459, 2.9871, 21.7737)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2183 #837F1D

analogous

#1D5483 #1D2183 #4C1D83

triadic

#1D2183 #831D21 #21831D

tetradic

#1D2183 #831D54 #837F1D #1D834C

square

#1D2183 #831D54 #837F1D #1D834C

split-complementary

#1D2183 #834C1D #54831D

monochromatic

#07081F #121451 #1D2183 #282EB5 #454AD6

Accessibility & contrast

On white

13.14

#1D2183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1D2183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2183

13.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2183	#FFFFFF	#000000	##FFFFFF
##1D2183	1.00	13.14	1.60	13.14
#FFFFFF	13.14	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003586

Deuteranopia (green-blind)

#002B81

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d2183;
/* rgb */ color: rgb(29, 33, 131);
/* oklch */ color: oklch(32.5% 0.159 271.6);

Tailwind

colors: {
  custom: {
    50: '#6c5da8',
    500: '#1d2183',
    950: '#000000',
  },
}

SCSS

$custom: #1d2183;
$custom-light: #6c5da8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2183",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 131
  },
  "hsl": {
    "h": 237.647,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.32454,
    "c": 0.15898,
    "h": 271.6
  },
  "luminance": 0.02988
}

Semantic roles & 50–950 ramp

primary

#1D2183

secondary

#B6B246

accent

#E041E7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D2183

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

Preview Lab → · Contrast checker → · Palette generator →