#1D4E8A#1D4E8A

#1D4E8A is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.4% C 0.113 H 255.4°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1D4E8A
RGB	rgb(29, 78, 138)
HSL	hsl(213, 65%, 33%)
HSV	hsv(213, 79%, 54%)
CMYK	cmyk(79%, 43.5%, 0%, 45.9%)
CIE-LAB	lab(33.01, 6.17, -38.10)
CIE-LCH	lch(33.01, 38.59, 279.19°)
OKLab	oklab(42.41% -0.0284 -0.109)
OKLCH	oklch(42.41% 0.113 255.4)
XYZ	xyz(7.8168, 7.5441, 25.0840)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4E8A #8A591D

analogous

#1D848A #1D4E8A #231D8A

triadic

#1D4E8A #8A1D4E #4E8A1D

tetradic

#1D4E8A #8A1D84 #8A591D #1D8A23

square

#1D4E8A #8A1D84 #8A591D #1D8A23

split-complementary

#1D4E8A #8A231D #848A1D

monochromatic

#081525 #123157 #1D4E8A #286BBD #4989D9

Accessibility & contrast

On white

8.37

#1D4E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1D4E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4E8A

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4E8A	#FFFFFF	#000000	##FFFFFF
##1D4E8A	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30538C

Deuteranopia (green-blind)

#1D4989

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4e8a;
/* rgb */ color: rgb(29, 78, 138);
/* oklch */ color: oklch(42.4% 0.113 255.4);

Tailwind

colors: {
  custom: {
    50: '#6a7fac',
    500: '#1d4e8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d4e8a;
$custom-light: #6a7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4e8a",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 138
  },
  "hsl": {
    "h": 213.028,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42407,
    "c": 0.11264,
    "h": 255.4
  },
  "luminance": 0.07545
}

Semantic roles & 50–950 ramp

primary

#1D4E8A

secondary

#BB8748

accent

#9C40E8

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1D4E8A

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

Preview Lab → · Contrast checker → · Palette generator →