#1D2871#1D2871

#1D2871 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 31.9% C 0.126 H 270.8°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1D2871
RGB	rgb(29, 40, 113)
HSL	hsl(232, 59%, 28%)
HSV	hsv(232, 74%, 44%)
CMYK	cmyk(74.3%, 64.6%, 0%, 55.7%)
CIE-LAB	lab(19.93, 22.55, -43.53)
CIE-LCH	lch(19.93, 49.02, 297.38°)
OKLab	oklab(31.86% 0.0018 -0.1257)
OKLCH	oklch(31.86% 0.126 270.8)
XYZ	xyz(4.2451, 2.9706, 15.9692)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2871 #71661D

analogous

#1D5271 #1D2871 #3C1D71

triadic

#1D2871 #711D28 #28711D

tetradic

#1D2871 #711D52 #71661D #1D713C

square

#1D2871 #711D52 #71661D #1D713C

split-complementary

#1D2871 #713C1D #52711D

monochromatic

#060918 #111740 #1D2871 #2939A2 #3C4FCD

Accessibility & contrast

On white

13.17

#1D2871 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1D2871 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2871

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2871	#FFFFFF	#000000	##FFFFFF
##1D2871	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003473

Deuteranopia (green-blind)

#002C70

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d2871;
/* rgb */ color: rgb(29, 40, 113);
/* oklch */ color: oklch(31.9% 0.126 270.8);

Tailwind

colors: {
  custom: {
    50: '#66619b',
    500: '#1d2871',
    950: '#000000',
  },
}

SCSS

$custom: #1d2871;
$custom-light: #66619b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2871",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 113
  },
  "hsl": {
    "h": 232.143,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31859,
    "c": 0.12567,
    "h": 270.8
  },
  "luminance": 0.02971
}

Semantic roles & 50–950 ramp

primary

#1D2871

secondary

#A59944

accent

#CE45E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1D2871

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

Preview Lab → · Contrast checker → · Palette generator →