#1F589F#1F589F

#1F589F is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.3% C 0.129 H 255.9°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F589F
RGB	rgb(31, 88, 159)
HSL	hsl(213, 67%, 37%)
HSV	hsv(213, 81%, 62%)
CMYK	cmyk(80.5%, 44.7%, 0%, 37.6%)
CIE-LAB	lab(37.43, 8.15, -43.75)
CIE-LCH	lch(37.43, 44.50, 280.56°)
OKLab	oklab(46.28% -0.0314 -0.1254)
OKLCH	oklch(46.28% 0.129 255.9)
XYZ	xyz(10.3105, 9.7727, 34.1371)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F589F #9F661F

analogous

#1F989F #1F589F #261F9F

triadic

#1F589F #9F1F58 #589F1F

tetradic

#1F589F #9F1F98 #9F661F #1F9F26

square

#1F589F #9F1F98 #9F661F #1F9F26

split-complementary

#1F589F #9F261F #989F1F

monochromatic

#0B1F39 #153C6C #1F589F #2974D2 #5A95DF

Accessibility & contrast

On white

7.11

#1F589F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#1F589F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F589F

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F589F	#FFFFFF	#000000	##FFFFFF
##1F589F	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA2

Deuteranopia (green-blind)

#19539E

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f589f;
/* rgb */ color: rgb(31, 88, 159);
/* oklch */ color: oklch(46.3% 0.129 255.9);

Tailwind

colors: {
  custom: {
    50: '#6f86bc',
    500: '#1f589f',
    950: '#000000',
  },
}

SCSS

$custom: #1f589f;
$custom-light: #6f86bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f589f",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 159
  },
  "hsl": {
    "h": 213.281,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.46278,
    "c": 0.12927,
    "h": 255.9
  },
  "luminance": 0.09774
}

Semantic roles & 50–950 ramp

primary

#1F589F

secondary

#C39357

accent

#9D3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F589F

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

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