#183E6C#183E6C

#183E6C is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.091 H 255.0°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#183E6C
RGB	rgb(24, 62, 108)
HSL	hsl(213, 64%, 26%)
HSV	hsv(213, 78%, 42%)
CMYK	cmyk(77.8%, 42.6%, 0%, 57.6%)
CIE-LAB	lab(25.93, 4.16, -30.64)
CIE-LCH	lch(25.93, 30.93, 277.74°)
OKLab	oklab(36.24% -0.0235 -0.0875)
OKLCH	oklch(36.24% 0.091 255)
XYZ	xyz(4.8051, 4.7216, 14.8426)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E6C #6C4618

analogous

#18686C #183E6C #1C186C

triadic

#183E6C #6C183E #3E6C18

tetradic

#183E6C #6C1868 #6C4618 #186C1C

square

#183E6C #6C1868 #6C4618 #186C1C

split-complementary

#183E6C #6C1C18 #686C18

monochromatic

#060E19 #0D213A #183E6C #235B9E #2E77D0

Accessibility & contrast

On white

10.80

#183E6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183E6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E6C

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E6C	#FFFFFF	#000000	##FFFFFF
##183E6C	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28426E

Deuteranopia (green-blind)

#1A3A6B

Tritanopia (blue-blind)

#00494F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183e6c;
/* rgb */ color: rgb(24, 62, 108);
/* oklch */ color: oklch(36.2% 0.091 255.0);

Tailwind

colors: {
  custom: {
    50: '#627296',
    500: '#183e6c',
    950: '#000000',
  },
}

SCSS

$custom: #183e6c;
$custom-light: #627296;
$custom-dark: #000000;

JSON

{
  "hex": "#183e6c",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 108
  },
  "hsl": {
    "h": 212.857,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.36237,
    "c": 0.09059,
    "h": 255
  },
  "luminance": 0.04722
}

Semantic roles & 50–950 ramp

primary

#183E6C

secondary

#A2753E

accent

#9C41E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #183E6C

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

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