#1B599E#1B599E

#1B599E is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.3% C 0.128 H 254.3°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B599E
RGB	rgb(27, 89, 158)
HSL	hsl(212, 71%, 36%)
HSV	hsv(212, 83%, 62%)
CMYK	cmyk(82.9%, 43.7%, 0%, 38%)
CIE-LAB	lab(37.56, 6.68, -42.94)
CIE-LCH	lch(37.56, 43.46, 278.84°)
OKLab	oklab(46.33% -0.0347 -0.123)
OKLCH	oklch(46.33% 0.128 254.3)
XYZ	xyz(10.1936, 9.8451, 33.7042)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B599E #9E601B

analogous

#1B9B9E #1B599E #1F1B9E

triadic

#1B599E #9E1B59 #599E1B

tetradic

#1B599E #9E1B9B #9E601B #1B9E1F

square

#1B599E #9E1B9B #9E601B #1B9E1F

split-complementary

#1B599E #9E1F1B #9B9E1B

monochromatic

#091E35 #123C6A #1B599E #2476D2 #5296E1

Accessibility & contrast

On white

7.07

#1B599E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#1B599E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B599E

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B599E	#FFFFFF	#000000	##FFFFFF
##1B599E	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365FA1

Deuteranopia (green-blind)

#1D539D

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b599e;
/* rgb */ color: rgb(27, 89, 158);
/* oklch */ color: oklch(46.3% 0.128 254.3);

Tailwind

colors: {
  custom: {
    50: '#6e87bb',
    500: '#1b599e',
    950: '#000000',
  },
}

SCSS

$custom: #1b599e;
$custom-light: #6e87bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b599e",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 158
  },
  "hsl": {
    "h": 211.603,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.46329,
    "c": 0.12784,
    "h": 254.3
  },
  "luminance": 0.09846
}

Semantic roles & 50–950 ramp

primary

#1B599E

secondary

#C48D51

accent

#993AEE

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1B599E

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

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