#183D70#183D70

#183D70 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.3% C 0.098 H 257.2°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#183D70
RGB	rgb(24, 61, 112)
HSL	hsl(215, 65%, 27%)
HSV	hsv(215, 79%, 44%)
CMYK	cmyk(78.6%, 45.5%, 0%, 56.1%)
CIE-LAB	lab(25.87, 6.51, -33.30)
CIE-LCH	lch(25.87, 33.93, 281.05°)
OKLab	oklab(36.27% -0.0216 -0.0953)
OKLCH	oklch(36.27% 0.098 257.2)
XYZ	xyz(4.9690, 4.7010, 15.9716)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D70 #704B18

analogous

#186970 #183D70 #1F1870

triadic

#183D70 #70183D #3D7018

tetradic

#183D70 #701869 #704B18 #18701F

square

#183D70 #701869 #704B18 #18701F

split-complementary

#183D70 #701F18 #697018

monochromatic

#050E19 #0D223E #183D70 #2358A2 #3074D3

Accessibility & contrast

On white

10.82

#183D70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183D70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D70

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D70	#FFFFFF	#000000	##FFFFFF
##183D70	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244272

Deuteranopia (green-blind)

#133A6F

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183d70;
/* rgb */ color: rgb(24, 61, 112);
/* oklch */ color: oklch(36.3% 0.098 257.2);

Tailwind

colors: {
  custom: {
    50: '#637299',
    500: '#183d70',
    950: '#000000',
  },
}

SCSS

$custom: #183d70;
$custom-light: #637299;
$custom-dark: #000000;

JSON

{
  "hex": "#183d70",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 112
  },
  "hsl": {
    "h": 214.773,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.36273,
    "c": 0.09771,
    "h": 257.2
  },
  "luminance": 0.04702
}

Semantic roles & 50–950 ramp

primary

#183D70

secondary

#A57A3E

accent

#A140E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183D70

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

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