#1D41B3#1D41B3

#1D41B3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.185 H 265.3°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D41B3
RGB	rgb(29, 65, 179)
HSL	hsl(226, 72%, 41%)
HSV	hsv(226, 84%, 70%)
CMYK	cmyk(83.8%, 63.7%, 0%, 29.8%)
CIE-LAB	lab(32.47, 31.23, -63.72)
CIE-LCH	lch(32.47, 70.96, 296.11°)
OKLab	oklab(42.97% -0.015 -0.1845)
OKLCH	oklch(42.97% 0.185 265.3)
XYZ	xyz(10.5308, 7.2952, 43.4922)
Luminance	0.0730 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D41B3 #B38F1D

analogous

#1D8CB3 #1D41B3 #441DB3

triadic

#1D41B3 #B31D41 #41B31D

tetradic

#1D41B3 #B31D8C #B38F1D #1DB344

square

#1D41B3 #B31D8C #B38F1D #1DB344

split-complementary

#1D41B3 #B3441D #8CB31D

monochromatic

#0C1B4A #142E7E #1D41B3 #3059DD #6484E6

Accessibility & contrast

On white

8.54

#1D41B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1D41B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D41B3

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D41B3	#FFFFFF	#000000	##FFFFFF
##1D41B3	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d41b3;
/* rgb */ color: rgb(29, 65, 179);
/* oklch */ color: oklch(43.0% 0.185 265.3);

Tailwind

colors: {
  custom: {
    50: '#7575cb',
    500: '#1d41b3',
    950: '#000000',
  },
}

SCSS

$custom: #1d41b3;
$custom-light: #7575cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d41b3",
  "rgb": {
    "r": 29,
    "g": 65,
    "b": 179
  },
  "hsl": {
    "h": 225.6,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.42973,
    "c": 0.18515,
    "h": 265.3
  },
  "luminance": 0.07296
}

Semantic roles & 50–950 ramp

primary

#1D41B3

secondary

#CBB161

accent

#C339EF

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1D41B3

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

Preview Lab → · Contrast checker → · Palette generator →