#1D4591#1D4591

#1D4591 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.134 H 261.7°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D4591
RGB	rgb(29, 69, 145)
HSL	hsl(219, 67%, 34%)
HSV	hsv(219, 80%, 57%)
CMYK	cmyk(80%, 52.4%, 0%, 43.1%)
CIE-LAB	lab(30.79, 15.10, -45.97)
CIE-LCH	lch(30.79, 48.39, 288.18°)
OKLab	oklab(40.84% -0.0194 -0.1324)
OKLCH	oklch(40.84% 0.134 261.7)
XYZ	xyz(7.7438, 6.5609, 27.6408)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4591 #91691D

analogous

#1D7F91 #1D4591 #2F1D91

triadic

#1D4591 #911D45 #45911D

tetradic

#1D4591 #911D7F #91691D #1D912F

square

#1D4591 #911D7F #91691D #1D912F

split-complementary

#1D4591 #912F1D #7F911D

monochromatic

#09142B #132D5E #1D4591 #275DC4 #4D7EDB

Accessibility & contrast

On white

9.08

#1D4591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1D4591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4591

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4591	#FFFFFF	#000000	##FFFFFF
##1D4591	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134E94

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#005764

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1d4591;
/* rgb */ color: rgb(29, 69, 145);
/* oklch */ color: oklch(40.8% 0.134 261.7);

Tailwind

colors: {
  custom: {
    50: '#6c78b2',
    500: '#1d4591',
    950: '#000000',
  },
}

SCSS

$custom: #1d4591;
$custom-light: #6c78b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4591",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 145
  },
  "hsl": {
    "h": 219.31,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.40843,
    "c": 0.13378,
    "h": 261.7
  },
  "luminance": 0.06562
}

Semantic roles & 50–950 ramp

primary

#1D4591

secondary

#BE974C

accent

#AE3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1D4591

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

Preview Lab → · Contrast checker → · Palette generator →