#1B599C#1B599C

#1B599C is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.2% C 0.125 H 253.7°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B599C
RGB	rgb(27, 89, 156)
HSL	hsl(211, 70%, 36%)
HSV	hsv(211, 83%, 61%)
CMYK	cmyk(82.7%, 42.9%, 0%, 38.8%)
CIE-LAB	lab(37.44, 5.88, -41.94)
CIE-LCH	lch(37.44, 42.35, 277.98°)
OKLab	oklab(46.19% -0.0351 -0.1201)
OKLCH	oklch(46.19% 0.125 253.7)
XYZ	xyz(10.0229, 9.7768, 32.8049)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B599C #9C5E1B

analogous

#1B999C #1B599C #1D1B9C

triadic

#1B599C #9C1B59 #599C1B

tetradic

#1B599C #9C1B99 #9C5E1B #1B9C1D

square

#1B599C #9C1B99 #9C5E1B #1B9C1D

split-complementary

#1B599C #9C1D1B #999C1B

monochromatic

#091D34 #123B68 #1B599C #2477D0 #5196E1

Accessibility & contrast

On white

7.11

#1B599C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#1B599C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B599C

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B599C	#FFFFFF	#000000	##FFFFFF
##1B599C	1.00	7.11	2.96	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9F

Deuteranopia (green-blind)

#20539B

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b599c;
/* rgb */ color: rgb(27, 89, 156);
/* oklch */ color: oklch(46.2% 0.125 253.7);

Tailwind

colors: {
  custom: {
    50: '#6e87ba',
    500: '#1b599c',
    950: '#000000',
  },
}

SCSS

$custom: #1b599c;
$custom-light: #6e87ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b599c",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 156
  },
  "hsl": {
    "h": 211.163,
    "s": 70.492,
    "l": 35.882
  },
  "oklch": {
    "l": 0.46193,
    "c": 0.12514,
    "h": 253.7
  },
  "luminance": 0.09778
}

Semantic roles & 50–950 ramp

primary

#1B599C

secondary

#C38C4F

accent

#973BED

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1B599C

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

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