#1B559D#1B559D

#1B559D is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.3% C 0.131 H 256.1°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B559D
RGB	rgb(27, 85, 157)
HSL	hsl(213, 71%, 36%)
HSV	hsv(213, 83%, 62%)
CMYK	cmyk(82.8%, 45.9%, 0%, 38.4%)
CIE-LAB	lab(36.30, 8.92, -44.37)
CIE-LCH	lch(36.30, 45.26, 281.36°)
OKLab	oklab(45.33% -0.0316 -0.1273)
OKLCH	oklch(45.33% 0.131 256.1)
XYZ	xyz(9.7840, 9.1631, 33.1447)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B559D #9D631B

analogous

#1B969D #1B559D #221B9D

triadic

#1B559D #9D1B55 #559D1B

tetradic

#1B559D #9D1B96 #9D631B #1B9D22

square

#1B559D #9D1B96 #9D631B #1B9D22

split-complementary

#1B559D #9D221B #969D1B

monochromatic

#091C35 #123969 #1B559D #2471D1 #5191E1

Accessibility & contrast

On white

7.41

#1B559D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B559D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B559D

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B559D	#FFFFFF	#000000	##FFFFFF
##1B559D	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5CA0

Deuteranopia (green-blind)

#10509C

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b559d;
/* rgb */ color: rgb(27, 85, 157);
/* oklch */ color: oklch(45.3% 0.131 256.1);

Tailwind

colors: {
  custom: {
    50: '#6e84ba',
    500: '#1b559d',
    950: '#000000',
  },
}

SCSS

$custom: #1b559d;
$custom-light: #6e84ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b559d",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 157
  },
  "hsl": {
    "h": 213.231,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.45327,
    "c": 0.1312,
    "h": 256.1
  },
  "luminance": 0.09164
}

Semantic roles & 50–950 ramp

primary

#1B559D

secondary

#C49050

accent

#9E3AED

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1B559D

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

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