#1D42A8#1D42A8

#1D42A8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.2% C 0.169 H 264.7°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#1D42A8
RGB	rgb(29, 66, 168)
HSL	hsl(224, 71%, 39%)
HSV	hsv(224, 83%, 66%)
CMYK	cmyk(82.7%, 60.7%, 0%, 34.1%)
CIE-LAB	lab(31.77, 26.30, -58.31)
CIE-LCH	lch(31.77, 63.97, 294.28°)
OKLab	oklab(42.16% -0.0156 -0.1687)
OKLCH	oklch(42.16% 0.169 264.7)
XYZ	xyz(9.5203, 6.9836, 37.8844)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D42A8 #A8831D

analogous

#1D87A8 #1D42A8 #3D1DA8

triadic

#1D42A8 #A81D42 #42A81D

tetradic

#1D42A8 #A81D87 #A8831D #1DA83D

square

#1D42A8 #A81D87 #A8831D #1DA83D

split-complementary

#1D42A8 #A83D1D #87A81D

monochromatic

#0B1940 #142D74 #1D42A8 #2858DA #5C80E3

Accessibility & contrast

On white

8.76

#1D42A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1D42A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D42A8

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D42A8	#FFFFFF	#000000	##FFFFFF
##1D42A8	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AB

Deuteranopia (green-blind)

#0044A6

Tritanopia (blue-blind)

#005C6E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1d42a8;
/* rgb */ color: rgb(29, 66, 168);
/* oklch */ color: oklch(42.2% 0.169 264.7);

Tailwind

colors: {
  custom: {
    50: '#7275c3',
    500: '#1d42a8',
    950: '#000000',
  },
}

SCSS

$custom: #1d42a8;
$custom-light: #7275c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d42a8",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 168
  },
  "hsl": {
    "h": 224.029,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.42157,
    "c": 0.16938,
    "h": 264.7
  },
  "luminance": 0.06985
}

Semantic roles & 50–950 ramp

primary

#1D42A8

secondary

#C7AA5A

accent

#BE3AED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1D42A8

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

Preview Lab → · Contrast checker → · Palette generator →