#183958#183958

#183958 is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.6% C 0.067 H 249.2°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#183958
RGB	rgb(24, 57, 88)
HSL	hsl(209, 57%, 22%)
HSV	hsv(209, 73%, 35%)
CMYK	cmyk(72.7%, 35.2%, 0%, 65.5%)
CIE-LAB	lab(23.08, -0.54, -22.18)
CIE-LCH	lch(23.08, 22.19, 268.61°)
OKLab	oklab(33.62% -0.0238 -0.0628)
OKLCH	oklch(33.62% 0.067 249.2)
XYZ	xyz(3.6006, 3.8247, 9.7791)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183958 #583718

analogous

#185857 #183958 #181958

triadic

#183958 #581839 #395818

tetradic

#183958 #571858 #583718 #195818

square

#183958 #571858 #583718 #195818

split-complementary

#183958 #581819 #585718

monochromatic

#071018 #0B1A28 #183958 #255888 #3277B8

Accessibility & contrast

On white

11.90

#183958 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183958 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183958

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183958	#FFFFFF	#000000	##FFFFFF
##183958	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3A59

Deuteranopia (green-blind)

#223457

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183958;
/* rgb */ color: rgb(24, 57, 88);
/* oklch */ color: oklch(33.6% 0.067 249.2);

Tailwind

colors: {
  custom: {
    50: '#5d6f87',
    500: '#183958',
    950: '#000000',
  },
}

SCSS

$custom: #183958;
$custom-light: #5d6f87;
$custom-dark: #000000;

JSON

{
  "hex": "#183958",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 88
  },
  "hsl": {
    "h": 209.063,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.33623,
    "c": 0.06718,
    "h": 249.2
  },
  "luminance": 0.03825
}

Semantic roles & 50–950 ramp

primary

#183958

secondary

#8F653D

accent

#9247E0

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #183958

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

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