#1D588A#1D588A

#1D588A is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.8% C 0.102 H 248.2°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#1D588A
RGB	rgb(29, 88, 138)
HSL	hsl(208, 65%, 33%)
HSV	hsv(208, 79%, 54%)
CMYK	cmyk(79%, 36.2%, 0%, 45.9%)
CIE-LAB	lab(36.13, -0.37, -33.14)
CIE-LCH	lch(36.13, 33.15, 269.35°)
OKLab	oklab(44.84% -0.0378 -0.0943)
OKLCH	oklch(44.84% 0.102 248.2)
XYZ	xyz(8.5821, 9.0746, 25.3391)
Luminance	0.0908 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D588A #8A4F1D

analogous

#1D8A85 #1D588A #1D228A

triadic

#1D588A #8A1D58 #588A1D

tetradic

#1D588A #851D8A #8A4F1D #228A1D

square

#1D588A #851D8A #8A4F1D #228A1D

split-complementary

#1D588A #8A1D22 #8A851D

monochromatic

#081825 #123857 #1D588A #2878BD #4997D9

Accessibility & contrast

On white

7.46

#1D588A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#1D588A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D588A

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D588A	#FFFFFF	#000000	##FFFFFF
##1D588A	1.00	7.46	2.82	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415A8C

Deuteranopia (green-blind)

#315089

Tritanopia (blue-blind)

#00646A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1d588a;
/* rgb */ color: rgb(29, 88, 138);
/* oklch */ color: oklch(44.8% 0.102 248.2);

Tailwind

colors: {
  custom: {
    50: '#6a86ac',
    500: '#1d588a',
    950: '#000000',
  },
}

SCSS

$custom: #1d588a;
$custom-light: #6a86ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d588a",
  "rgb": {
    "r": 29,
    "g": 88,
    "b": 138
  },
  "hsl": {
    "h": 207.523,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.44839,
    "c": 0.10159,
    "h": 248.2
  },
  "luminance": 0.09076
}

Semantic roles & 50–950 ramp

primary

#1D588A

secondary

#BB7D48

accent

#8D40E8

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1D588A

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

Preview Lab → · Contrast checker → · Palette generator →