#1F599E#1F599E

#1F599E is a mid, vivid cyan. Relative luminance 0.099; OKLCH L 46.4% C 0.127 H 255.1°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#1F599E
RGB	rgb(31, 89, 158)
HSL	hsl(213, 67%, 37%)
HSV	hsv(213, 80%, 62%)
CMYK	cmyk(80.4%, 43.7%, 0%, 38%)
CIE-LAB	lab(37.67, 7.10, -42.77)
CIE-LCH	lch(37.67, 43.35, 279.43°)
OKLab	oklab(46.44% -0.0325 -0.1225)
OKLCH	oklch(46.44% 0.127 255.1)
XYZ	xyz(10.3067, 9.9035, 33.7095)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F599E #9E641F

analogous

#1F999E #1F599E #241F9E

triadic

#1F599E #9E1F59 #599E1F

tetradic

#1F599E #9E1F99 #9E641F #1F9E24

square

#1F599E #9E1F99 #9E641F #1F9E24

split-complementary

#1F599E #9E241F #999E1F

monochromatic

#0B1F38 #153C6B #1F599E #2976D1 #5996DE

Accessibility & contrast

On white

7.04

#1F599E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#1F599E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F599E

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F599E	#FFFFFF	#000000	##FFFFFF
##1F599E	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365FA1

Deuteranopia (green-blind)

#1E539D

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1f599e;
/* rgb */ color: rgb(31, 89, 158);
/* oklch */ color: oklch(46.4% 0.127 255.1);

Tailwind

colors: {
  custom: {
    50: '#6f87bb',
    500: '#1f599e',
    950: '#000000',
  },
}

SCSS

$custom: #1f599e;
$custom-light: #6f87bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f599e",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 158
  },
  "hsl": {
    "h": 212.598,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.46442,
    "c": 0.12673,
    "h": 255.1
  },
  "luminance": 0.09905
}

Semantic roles & 50–950 ramp

primary

#1F599E

secondary

#C29156

accent

#9B3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F599E

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

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