#1D588C#1D588C

#1D588C is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 45.0% C 0.104 H 249.1°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D588C
RGB	rgb(29, 88, 140)
HSL	hsl(208, 66%, 33%)
HSV	hsv(208, 79%, 55%)
CMYK	cmyk(79.3%, 37.1%, 0%, 45.1%)
CIE-LAB	lab(36.24, 0.41, -34.18)
CIE-LCH	lch(36.24, 34.19, 270.69°)
OKLab	oklab(44.96% -0.0372 -0.0974)
OKLCH	oklch(44.96% 0.104 249.1)
XYZ	xyz(8.7282, 9.1331, 26.1087)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D588C #8C511D

analogous

#1D8C88 #1D588C #1D218C

triadic

#1D588C #8C1D58 #588C1D

tetradic

#1D588C #881D8C #8C511D #218C1D

square

#1D588C #881D8C #8C511D #218C1D

split-complementary

#1D588C #8C1D21 #8C881D

monochromatic

#081827 #123859 #1D588C #2878BF #4A96D9

Accessibility & contrast

On white

7.43

#1D588C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1D588C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D588C

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D588C	#FFFFFF	#000000	##FFFFFF
##1D588C	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405B8E

Deuteranopia (green-blind)

#2F518B

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1d588c;
/* rgb */ color: rgb(29, 88, 140);
/* oklch */ color: oklch(45.0% 0.104 249.1);

Tailwind

colors: {
  custom: {
    50: '#6b86ae',
    500: '#1d588c',
    950: '#000000',
  },
}

SCSS

$custom: #1d588c;
$custom-light: #6b86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d588c",
  "rgb": {
    "r": 29,
    "g": 88,
    "b": 140
  },
  "hsl": {
    "h": 208.108,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.44964,
    "c": 0.10422,
    "h": 249.1
  },
  "luminance": 0.09134
}

Semantic roles & 50–950 ramp

primary

#1D588C

secondary

#BC7F49

accent

#8F3FE9

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1D588C

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

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