#1C588C#1C588C

#1C588C is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.9% C 0.105 H 248.8°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C588C
RGB	rgb(28, 88, 140)
HSL	hsl(208, 67%, 33%)
HSV	hsv(208, 80%, 55%)
CMYK	cmyk(80%, 37.1%, 0%, 45.1%)
CIE-LAB	lab(36.21, 0.29, -34.23)
CIE-LCH	lch(36.21, 34.23, 270.48°)
OKLab	oklab(44.93% -0.0378 -0.0975)
OKLCH	oklch(44.93% 0.105 248.8)
XYZ	xyz(8.7004, 9.1187, 26.1074)
Luminance	0.0912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C588C #8C501C

analogous

#1C8C88 #1C588C #1C208C

triadic

#1C588C #8C1C58 #588C1C

tetradic

#1C588C #881C8C #8C501C #208C1C

square

#1C588C #881C8C #8C501C #208C1C

split-complementary

#1C588C #8C1C20 #8C881C

monochromatic

#081826 #123859 #1C588C #2678BF #4896DA

Accessibility & contrast

On white

7.44

#1C588C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#1C588C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C588C

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C588C	#FFFFFF	#000000	##FFFFFF
##1C588C	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	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: #1c588c;
/* rgb */ color: rgb(28, 88, 140);
/* oklch */ color: oklch(44.9% 0.105 248.8);

Tailwind

colors: {
  custom: {
    50: '#6a86ae',
    500: '#1c588c',
    950: '#000000',
  },
}

SCSS

$custom: #1c588c;
$custom-light: #6a86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c588c",
  "rgb": {
    "r": 28,
    "g": 88,
    "b": 140
  },
  "hsl": {
    "h": 207.857,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.44934,
    "c": 0.10455,
    "h": 248.8
  },
  "luminance": 0.0912
}

Semantic roles & 50–950 ramp

primary

#1C588C

secondary

#BC7E48

accent

#8E3EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1C588C

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

Preview Lab → · Contrast checker → · Palette generator →