#1D4582#1D4582

#1D4582 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.7% C 0.112 H 258.8°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D4582
RGB	rgb(29, 69, 130)
HSL	hsl(216, 64%, 31%)
HSV	hsv(216, 78%, 51%)
CMYK	cmyk(77.7%, 46.9%, 0%, 49%)
CIE-LAB	lab(29.73, 9.03, -38.41)
CIE-LCH	lch(29.73, 39.46, 283.23°)
OKLab	oklab(39.7% -0.0218 -0.1101)
OKLCH	oklch(39.7% 0.112 258.8)
XYZ	xyz(6.6626, 6.1284, 21.9465)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4582 #825A1D

analogous

#1D7782 #1D4582 #281D82

triadic

#1D4582 #821D45 #45821D

tetradic

#1D4582 #821D77 #825A1D #1D8228

square

#1D4582 #821D77 #825A1D #1D8228

split-complementary

#1D4582 #82281D #77821D

monochromatic

#07101E #122A50 #1D4582 #2860B4 #447ED5

Accessibility & contrast

On white

9.43

#1D4582 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1D4582 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4582

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4582	#FFFFFF	#000000	##FFFFFF
##1D4582	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254B84

Deuteranopia (green-blind)

#0F4281

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d4582;
/* rgb */ color: rgb(29, 69, 130);
/* oklch */ color: oklch(39.7% 0.112 258.8);

Tailwind

colors: {
  custom: {
    50: '#6878a7',
    500: '#1d4582',
    950: '#000000',
  },
}

SCSS

$custom: #1d4582;
$custom-light: #6878a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4582",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 130
  },
  "hsl": {
    "h": 216.238,
    "s": 63.522,
    "l": 31.176
  },
  "oklch": {
    "l": 0.397,
    "c": 0.11225,
    "h": 258.8
  },
  "luminance": 0.06129
}

Semantic roles & 50–950 ramp

primary

#1D4582

secondary

#B58946

accent

#A541E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D4582

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

Preview Lab → · Contrast checker → · Palette generator →