#183F6C#183F6C

#183F6C is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.5% C 0.089 H 254.1°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#183F6C
RGB	rgb(24, 63, 108)
HSL	hsl(212, 64%, 26%)
HSV	hsv(212, 78%, 42%)
CMYK	cmyk(77.8%, 41.7%, 0%, 57.6%)
CIE-LAB	lab(26.25, 3.47, -30.13)
CIE-LCH	lch(26.25, 30.33, 276.58°)
OKLab	oklab(36.49% -0.0245 -0.086)
OKLCH	oklch(36.49% 0.089 254.1)
XYZ	xyz(4.8600, 4.8314, 14.8609)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F6C #6C4518

analogous

#18696C #183F6C #1B186C

triadic

#183F6C #6C183F #3F6C18

tetradic

#183F6C #6C1869 #6C4518 #186C1B

square

#183F6C #6C1869 #6C4518 #186C1B

split-complementary

#183F6C #6C1B18 #696C18

monochromatic

#060F19 #0D223A #183F6C #235C9E #2E79D0

Accessibility & contrast

On white

10.68

#183F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#183F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F6C

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F6C	#FFFFFF	#000000	##FFFFFF
##183F6C	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A426E

Deuteranopia (green-blind)

#1D3B6B

Tritanopia (blue-blind)

#004A50

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183f6c;
/* rgb */ color: rgb(24, 63, 108);
/* oklch */ color: oklch(36.5% 0.089 254.1);

Tailwind

colors: {
  custom: {
    50: '#627396',
    500: '#183f6c',
    950: '#000000',
  },
}

SCSS

$custom: #183f6c;
$custom-light: #627396;
$custom-dark: #000000;

JSON

{
  "hex": "#183f6c",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 108
  },
  "hsl": {
    "h": 212.143,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.36488,
    "c": 0.0894,
    "h": 254.1
  },
  "luminance": 0.04832
}

Semantic roles & 50–950 ramp

primary

#183F6C

secondary

#A2733E

accent

#9A41E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #183F6C

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

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