#1C4E83#1C4E83

#1C4E83 is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.9% C 0.103 H 252.7°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#1C4E83
RGB	rgb(28, 78, 131)
HSL	hsl(211, 65%, 31%)
HSV	hsv(211, 79%, 51%)
CMYK	cmyk(78.6%, 40.5%, 0%, 48.6%)
CIE-LAB	lab(32.55, 3.23, -34.53)
CIE-LCH	lch(32.55, 34.68, 275.35°)
OKLab	oklab(41.9% -0.0307 -0.0985)
OKLCH	oklch(41.9% 0.103 252.7)
XYZ	xyz(7.2985, 7.3335, 22.4992)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4E83 #83511C

analogous

#1C8183 #1C4E83 #1D1C83

triadic

#1C4E83 #831C4E #4E831C

tetradic

#1C4E83 #831C81 #83511C #1C831D

square

#1C4E83 #831C81 #83511C #1C831D

split-complementary

#1C4E83 #831D1C #81831C

monochromatic

#06121E #113051 #1C4E83 #276CB5 #438BD7

Accessibility & contrast

On white

8.51

#1C4E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1C4E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4E83

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4E83	#FFFFFF	#000000	##FFFFFF
##1C4E83	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355285

Deuteranopia (green-blind)

#254882

Tritanopia (blue-blind)

#005B62

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1c4e83;
/* rgb */ color: rgb(28, 78, 131);
/* oklch */ color: oklch(41.9% 0.103 252.7);

Tailwind

colors: {
  custom: {
    50: '#687fa7',
    500: '#1c4e83',
    950: '#000000',
  },
}

SCSS

$custom: #1c4e83;
$custom-light: #687fa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4e83",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 131
  },
  "hsl": {
    "h": 210.874,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.419,
    "c": 0.1032,
    "h": 252.7
  },
  "luminance": 0.07334
}

Semantic roles & 50–950 ramp

primary

#1C4E83

secondary

#B67F45

accent

#9640E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1C4E83

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

Preview Lab → · Contrast checker → · Palette generator →