#1F4E81#1F4E81

#1F4E81 is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.9% C 0.099 H 252.9°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E81
RGB	rgb(31, 78, 129)
HSL	hsl(211, 61%, 31%)
HSV	hsv(211, 76%, 51%)
CMYK	cmyk(76%, 39.5%, 0%, 49.4%)
CIE-LAB	lab(32.53, 2.85, -33.32)
CIE-LCH	lch(32.53, 33.44, 274.90°)
OKLab	oklab(41.87% -0.0292 -0.095)
OKLCH	oklch(41.87% 0.099 252.9)
XYZ	xyz(7.2504, 7.3243, 21.7962)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E81 #81521F

analogous

#1F7F81 #1F4E81 #211F81

triadic

#1F4E81 #811F4E #4E811F

tetradic

#1F4E81 #811F7F #81521F #1F8121

square

#1F4E81 #811F7F #81521F #1F8121

split-complementary

#1F4E81 #81211F #7F811F

monochromatic

#07121E #133050 #1F4E81 #2B6CB2 #478AD3

Accessibility & contrast

On white

8.52

#1F4E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1F4E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E81

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E81	#FFFFFF	#000000	##FFFFFF
##1F4E81	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365183

Deuteranopia (green-blind)

#274880

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4e81;
/* rgb */ color: rgb(31, 78, 129);
/* oklch */ color: oklch(41.9% 0.099 252.9);

Tailwind

colors: {
  custom: {
    50: '#697fa6',
    500: '#1f4e81',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e81;
$custom-light: #697fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e81",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 129
  },
  "hsl": {
    "h": 211.224,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41873,
    "c": 0.09935,
    "h": 252.9
  },
  "luminance": 0.07325
}

Semantic roles & 50–950 ramp

primary

#1F4E81

secondary

#B48048

accent

#9743E4

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F4E81

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

Preview Lab → · Contrast checker → · Palette generator →