#1D3EA8#1D3EA8

#1D3EA8 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.174 H 265.6°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#1D3EA8
RGB	rgb(29, 62, 168)
HSL	hsl(226, 71%, 39%)
HSV	hsv(226, 83%, 66%)
CMYK	cmyk(82.7%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(30.72, 28.99, -60.03)
CIE-LCH	lch(30.72, 66.66, 295.78°)
OKLab	oklab(41.38% -0.0134 -0.1737)
OKLCH	oklch(41.38% 0.174 265.6)
XYZ	xyz(9.2947, 6.5325, 37.8092)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3EA8 #A8871D

analogous

#1D83A8 #1D3EA8 #411DA8

triadic

#1D3EA8 #A81D3E #3EA81D

tetradic

#1D3EA8 #A81D83 #A8871D #1DA841

square

#1D3EA8 #A81D83 #A8871D #1DA841

split-complementary

#1D3EA8 #A8411D #83A81D

monochromatic

#0B1740 #142B74 #1D3EA8 #2852DA #5C7CE3

Accessibility & contrast

On white

9.10

#1D3EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1D3EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3EA8

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3EA8	#FFFFFF	#000000	##FFFFFF
##1D3EA8	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1d3ea8;
/* rgb */ color: rgb(29, 62, 168);
/* oklch */ color: oklch(41.4% 0.174 265.6);

Tailwind

colors: {
  custom: {
    50: '#7373c3',
    500: '#1d3ea8',
    950: '#000000',
  },
}

SCSS

$custom: #1d3ea8;
$custom-light: #7373c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3ea8",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 225.755,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.41375,
    "c": 0.17426,
    "h": 265.6
  },
  "luminance": 0.06534
}

Semantic roles & 50–950 ramp

primary

#1D3EA8

secondary

#C7AD5A

accent

#C33AED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1D3EA8

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

Preview Lab → · Contrast checker → · Palette generator →