#1B4883#1B4883

#1B4883 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 40.4% C 0.111 H 256.6°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B4883
RGB	rgb(27, 72, 131)
HSL	hsl(214, 66%, 31%)
HSV	hsv(214, 79%, 51%)
CMYK	cmyk(79.4%, 45%, 0%, 48.6%)
CIE-LAB	lab(30.65, 7.13, -37.56)
CIE-LCH	lch(30.65, 38.23, 280.75°)
OKLab	oklab(40.41% -0.0257 -0.1076)
OKLCH	oklch(40.41% 0.111 256.6)
XYZ	xyz(6.8646, 6.5056, 22.3623)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4883 #83561B

analogous

#1B7C83 #1B4883 #221B83

triadic

#1B4883 #831B48 #48831B

tetradic

#1B4883 #831B7C #83561B #1B8322

square

#1B4883 #831B7C #83561B #1B8322

split-complementary

#1B4883 #83221B #7C831B

monochromatic

#06101E #112C50 #1B4883 #2564B6 #4182D8

Accessibility & contrast

On white

9.13

#1B4883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4883

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4883	#FFFFFF	#000000	##FFFFFF
##1B4883	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4D85

Deuteranopia (green-blind)

#164482

Tritanopia (blue-blind)

#00565F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4883;
/* rgb */ color: rgb(27, 72, 131);
/* oklch */ color: oklch(40.4% 0.111 256.6);

Tailwind

colors: {
  custom: {
    50: '#687aa7',
    500: '#1b4883',
    950: '#000000',
  },
}

SCSS

$custom: #1b4883;
$custom-light: #687aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4883",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 131
  },
  "hsl": {
    "h": 214.038,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40413,
    "c": 0.11061,
    "h": 256.6
  },
  "luminance": 0.06506
}

Semantic roles & 50–950 ramp

primary

#1B4883

secondary

#B68543

accent

#9F3FE9

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4883

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

Preview Lab → · Contrast checker → · Palette generator →