#1D3FA0#1D3FA0

#1D3FA0 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.8% C 0.162 H 265.0°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D3FA0
RGB	rgb(29, 63, 160)
HSL	hsl(224, 69%, 37%)
HSV	hsv(224, 82%, 63%)
CMYK	cmyk(81.9%, 60.6%, 0%, 37.3%)
CIE-LAB	lab(30.29, 25.19, -55.91)
CIE-LCH	lch(30.29, 61.32, 294.26°)
OKLab	oklab(40.84% -0.014 -0.1617)
OKLCH	oklch(40.84% 0.162 265)
XYZ	xyz(8.6271, 6.3533, 34.0225)
Luminance	0.0635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3FA0 #A07E1D

analogous

#1D81A0 #1D3FA0 #3C1DA0

triadic

#1D3FA0 #A01D3F #3FA01D

tetradic

#1D3FA0 #A01D81 #A07E1D #1DA03C

square

#1D3FA0 #A01D81 #A07E1D #1DA03C

split-complementary

#1D3FA0 #A03C1D #81A01D

monochromatic

#0A1638 #142B6C #1D3FA0 #2653D4 #577BE1

Accessibility & contrast

On white

9.25

#1D3FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1D3FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3FA0

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3FA0	#FFFFFF	#000000	##FFFFFF
##1D3FA0	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1d3fa0;
/* rgb */ color: rgb(29, 63, 160);
/* oklch */ color: oklch(40.8% 0.162 265.0);

Tailwind

colors: {
  custom: {
    50: '#7073bd',
    500: '#1d3fa0',
    950: '#000000',
  },
}

SCSS

$custom: #1d3fa0;
$custom-light: #7073bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3fa0",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 160
  },
  "hsl": {
    "h": 224.427,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40839,
    "c": 0.16229,
    "h": 265
  },
  "luminance": 0.06354
}

Semantic roles & 50–950 ramp

primary

#1D3FA0

secondary

#C4A755

accent

#BE3CEC

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D3FA0

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

Preview Lab → · Contrast checker → · Palette generator →