#1C4E81#1C4E81

#1C4E81 is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.8% C 0.100 H 251.9°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#1C4E81
RGB	rgb(28, 78, 129)
HSL	hsl(210, 64%, 31%)
HSV	hsv(210, 78%, 51%)
CMYK	cmyk(78.3%, 39.5%, 0%, 49.4%)
CIE-LAB	lab(32.44, 2.44, -33.48)
CIE-LCH	lch(32.44, 33.57, 274.16°)
OKLab	oklab(41.77% -0.0312 -0.0955)
OKLCH	oklch(41.77% 0.1 251.9)
XYZ	xyz(7.1642, 7.2798, 21.7922)
Luminance	0.0728 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4E81 #814F1C

analogous

#1C8081 #1C4E81 #1C1C81

triadic

#1C4E81 #811C4E #4E811C

tetradic

#1C4E81 #811C80 #814F1C #1C811C

square

#1C4E81 #811C80 #814F1C #1C811C

split-complementary

#1C4E81 #811C1C #80811C

monochromatic

#06111C #11304F #1C4E81 #276CB3 #428BD6

Accessibility & contrast

On white

8.55

#1C4E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1C4E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4E81

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4E81	#FFFFFF	#000000	##FFFFFF
##1C4E81	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365183

Deuteranopia (green-blind)

#264880

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1c4e81;
/* rgb */ color: rgb(28, 78, 129);
/* oklch */ color: oklch(41.8% 0.100 251.9);

Tailwind

colors: {
  custom: {
    50: '#687fa6',
    500: '#1c4e81',
    950: '#000000',
  },
}

SCSS

$custom: #1c4e81;
$custom-light: #687fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4e81",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 129
  },
  "hsl": {
    "h": 210.297,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41769,
    "c": 0.10043,
    "h": 251.9
  },
  "luminance": 0.07281
}

Semantic roles & 50–950 ramp

primary

#1C4E81

secondary

#B47D44

accent

#9540E7

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1C4E81

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

Preview Lab → · Contrast checker → · Palette generator →