#1D42B0#1D42B0

#1D42B0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.9% C 0.180 H 265.1°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D42B0
RGB	rgb(29, 66, 176)
HSL	hsl(225, 72%, 40%)
HSV	hsv(225, 84%, 69%)
CMYK	cmyk(83.5%, 62.5%, 0%, 31%)
CIE-LAB	lab(32.46, 29.41, -61.96)
CIE-LCH	lch(32.46, 68.58, 295.39°)
OKLab	oklab(42.89% -0.0155 -0.1793)
OKLCH	oklch(42.89% 0.18 265.1)
XYZ	xyz(10.2886, 7.2910, 41.9309)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D42B0 #B08B1D

analogous

#1D8BB0 #1D42B0 #421DB0

triadic

#1D42B0 #B01D42 #42B01D

tetradic

#1D42B0 #B01D8B #B08B1D #1DB042

square

#1D42B0 #B01D8B #B08B1D #1DB042

split-complementary

#1D42B0 #B0421D #8BB01D

monochromatic

#0C1B47 #142E7B #1D42B0 #2E5ADD #6283E5

Accessibility & contrast

On white

8.54

#1D42B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1D42B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D42B0

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D42B0	#FFFFFF	#000000	##FFFFFF
##1D42B0	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)

#0053B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005F72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d42b0;
/* rgb */ color: rgb(29, 66, 176);
/* oklch */ color: oklch(42.9% 0.180 265.1);

Tailwind

colors: {
  custom: {
    50: '#7476c9',
    500: '#1d42b0',
    950: '#000000',
  },
}

SCSS

$custom: #1d42b0;
$custom-light: #7476c9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d42b0",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 176
  },
  "hsl": {
    "h": 224.898,
    "s": 71.707,
    "l": 40.196
  },
  "oklch": {
    "l": 0.42885,
    "c": 0.18002,
    "h": 265.1
  },
  "luminance": 0.07292
}

Semantic roles & 50–950 ramp

primary

#1D42B0

secondary

#CAAF5F

accent

#C139EE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1D42B0

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

Preview Lab → · Contrast checker → · Palette generator →