#1F588C#1F588C

#1F588C is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.104 H 249.6°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F588C
RGB	rgb(31, 88, 140)
HSL	hsl(209, 64%, 34%)
HSV	hsv(209, 78%, 55%)
CMYK	cmyk(77.9%, 37.1%, 0%, 45.1%)
CIE-LAB	lab(36.30, 0.66, -34.09)
CIE-LCH	lch(36.30, 34.10, 271.12°)
OKLab	oklab(45.03% -0.0361 -0.097)
OKLCH	oklch(45.03% 0.104 249.6)
XYZ	xyz(8.7866, 9.1632, 26.1114)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F588C #8C531F

analogous

#1F8C89 #1F588C #1F218C

triadic

#1F588C #8C1F58 #588C1F

tetradic

#1F588C #891F8C #8C531F #218C1F

square

#1F588C #891F8C #8C531F #218C1F

split-complementary

#1F588C #8C1F21 #8C891F

monochromatic

#091928 #14395A #1F588C #2A77BE #4E96D8

Accessibility & contrast

On white

7.41

#1F588C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1F588C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F588C

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F588C	#FFFFFF	#000000	##FFFFFF
##1F588C	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)

#405B8E

Deuteranopia (green-blind)

#30518B

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f588c;
/* rgb */ color: rgb(31, 88, 140);
/* oklch */ color: oklch(45.0% 0.104 249.6);

Tailwind

colors: {
  custom: {
    50: '#6b86ae',
    500: '#1f588c',
    950: '#000000',
  },
}

SCSS

$custom: #1f588c;
$custom-light: #6b86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f588c",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 140
  },
  "hsl": {
    "h": 208.624,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.45025,
    "c": 0.10353,
    "h": 249.6
  },
  "luminance": 0.09164
}

Semantic roles & 50–950 ramp

primary

#1F588C

secondary

#BB814C

accent

#9041E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1F588C

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

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