#1D41B0#1D41B0

#1D41B0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.181 H 265.3°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#1D41B0
RGB	rgb(29, 65, 176)
HSL	hsl(225, 72%, 40%)
HSV	hsv(225, 84%, 69%)
CMYK	cmyk(83.5%, 63.1%, 0%, 31%)
CIE-LAB	lab(32.20, 30.08, -62.38)
CIE-LCH	lch(32.20, 69.25, 295.74°)
OKLab	oklab(42.69% -0.015 -0.1806)
OKLCH	oklch(42.69% 0.181 265.3)
XYZ	xyz(10.2307, 7.1751, 41.9116)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D41B0 #B08C1D

analogous

#1D8AB0 #1D41B0 #421DB0

triadic

#1D41B0 #B01D41 #41B01D

tetradic

#1D41B0 #B01D8A #B08C1D #1DB042

square

#1D41B0 #B01D8A #B08C1D #1DB042

split-complementary

#1D41B0 #B0421D #8AB01D

monochromatic

#0C1A47 #142E7B #1D41B0 #2E59DD #6282E5

Accessibility & contrast

On white

8.62

#1D41B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1D41B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D41B0

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D41B0	#FFFFFF	#000000	##FFFFFF
##1D41B0	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d41b0;
/* rgb */ color: rgb(29, 65, 176);
/* oklch */ color: oklch(42.7% 0.181 265.3);

Tailwind

colors: {
  custom: {
    50: '#7575c9',
    500: '#1d41b0',
    950: '#000000',
  },
}

SCSS

$custom: #1d41b0;
$custom-light: #7575c9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d41b0",
  "rgb": {
    "r": 29,
    "g": 65,
    "b": 176
  },
  "hsl": {
    "h": 225.306,
    "s": 71.707,
    "l": 40.196
  },
  "oklch": {
    "l": 0.42693,
    "c": 0.18122,
    "h": 265.3
  },
  "luminance": 0.07176
}

Semantic roles & 50–950 ramp

primary

#1D41B0

secondary

#CAB05F

accent

#C239EE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1D41B0

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

Preview Lab → · Contrast checker → · Palette generator →