#1B5283#1B5283

#1B5283 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.9% C 0.099 H 249.3°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B5283
RGB	rgb(27, 82, 131)
HSL	hsl(208, 66%, 31%)
HSV	hsv(208, 79%, 51%)
CMYK	cmyk(79.4%, 37.4%, 0%, 48.6%)
CIE-LAB	lab(33.79, 0.48, -32.57)
CIE-LCH	lch(33.79, 32.58, 270.85°)
OKLab	oklab(42.86% -0.0351 -0.0927)
OKLCH	oklch(42.86% 0.099 249.3)
XYZ	xyz(7.5645, 7.9054, 22.5955)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5283 #834C1B

analogous

#1B8380 #1B5283 #1B1E83

triadic

#1B5283 #831B52 #52831B

tetradic

#1B5283 #801B83 #834C1B #1E831B

square

#1B5283 #801B83 #834C1B #1E831B

split-complementary

#1B5283 #831B1E #83801B

monochromatic

#06121E #113250 #1B5283 #2572B6 #4191D8

Accessibility & contrast

On white

8.14

#1B5283 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B5283 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5283

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5283	#FFFFFF	#000000	##FFFFFF
##1B5283	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5585

Deuteranopia (green-blind)

#2C4B82

Tritanopia (blue-blind)

#005E64

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5283;
/* rgb */ color: rgb(27, 82, 131);
/* oklch */ color: oklch(42.9% 0.099 249.3);

Tailwind

colors: {
  custom: {
    50: '#6882a7',
    500: '#1b5283',
    950: '#000000',
  },
}

SCSS

$custom: #1b5283;
$custom-light: #6882a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5283",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 131
  },
  "hsl": {
    "h": 208.269,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.42855,
    "c": 0.09918,
    "h": 249.3
  },
  "luminance": 0.07906
}

Semantic roles & 50–950 ramp

primary

#1B5283

secondary

#B67A43

accent

#8F3FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5283

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

Preview Lab → · Contrast checker → · Palette generator →