#1D4783#1D4783

#1D4783 is a dark, moderate blue. Relative luminance 0.064; OKLCH L 40.2% C 0.111 H 257.8°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#1D4783
RGB	rgb(29, 71, 131)
HSL	hsl(215, 64%, 31%)
HSV	hsv(215, 78%, 51%)
CMYK	cmyk(77.9%, 45.8%, 0%, 48.6%)
CIE-LAB	lab(30.41, 8.07, -37.94)
CIE-LCH	lch(30.41, 38.79, 282.01°)
OKLab	oklab(40.25% -0.0234 -0.1087)
OKLCH	oklch(40.25% 0.111 257.8)
XYZ	xyz(6.8552, 6.4056, 22.3434)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4783 #83591D

analogous

#1D7A83 #1D4783 #261D83

triadic

#1D4783 #831D47 #47831D

tetradic

#1D4783 #831D7A #83591D #1D8326

square

#1D4783 #831D7A #83591D #1D8326

split-complementary

#1D4783 #83261D #7A831D

monochromatic

#07111F #122C51 #1D4783 #2862B5 #4580D6

Accessibility & contrast

On white

9.21

#1D4783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1D4783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4783

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4783	#FFFFFF	#000000	##FFFFFF
##1D4783	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294D85

Deuteranopia (green-blind)

#144382

Tritanopia (blue-blind)

#00555E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1d4783;
/* rgb */ color: rgb(29, 71, 131);
/* oklch */ color: oklch(40.2% 0.111 257.8);

Tailwind

colors: {
  custom: {
    50: '#6979a7',
    500: '#1d4783',
    950: '#000000',
  },
}

SCSS

$custom: #1d4783;
$custom-light: #6979a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4783",
  "rgb": {
    "r": 29,
    "g": 71,
    "b": 131
  },
  "hsl": {
    "h": 215.294,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.40246,
    "c": 0.1112,
    "h": 257.8
  },
  "luminance": 0.06406
}

Semantic roles & 50–950 ramp

primary

#1D4783

secondary

#B68846

accent

#A341E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1D4783

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

Preview Lab → · Contrast checker → · Palette generator →