#183E71#183E71

#183E71 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.6% C 0.098 H 256.8°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#183E71
RGB	rgb(24, 62, 113)
HSL	hsl(214, 65%, 27%)
HSV	hsv(214, 79%, 44%)
CMYK	cmyk(78.8%, 45.1%, 0%, 55.7%)
CIE-LAB	lab(26.25, 6.22, -33.32)
CIE-LCH	lch(26.25, 33.90, 280.58°)
OKLab	oklab(36.59% -0.0223 -0.0953)
OKLCH	oklch(36.59% 0.098 256.8)
XYZ	xyz(5.0789, 4.8311, 16.2844)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E71 #714B18

analogous

#186B71 #183E71 #1E1871

triadic

#183E71 #71183E #3E7118

tetradic

#183E71 #71186B #714B18 #18711E

square

#183E71 #71186B #714B18 #18711E

split-complementary

#183E71 #711E18 #6B7118

monochromatic

#050E19 #0D223F #183E71 #235AA3 #3076D3

Accessibility & contrast

On white

10.68

#183E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#183E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E71

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E71	#FFFFFF	#000000	##FFFFFF
##183E71	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)

#254373

Deuteranopia (green-blind)

#143A70

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183e71;
/* rgb */ color: rgb(24, 62, 113);
/* oklch */ color: oklch(36.6% 0.098 256.8);

Tailwind

colors: {
  custom: {
    50: '#63729a',
    500: '#183e71',
    950: '#000000',
  },
}

SCSS

$custom: #183e71;
$custom-light: #63729a;
$custom-dark: #000000;

JSON

{
  "hex": "#183e71",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 113
  },
  "hsl": {
    "h": 214.382,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36591,
    "c": 0.09793,
    "h": 256.8
  },
  "luminance": 0.04832
}

Semantic roles & 50–950 ramp

primary

#183E71

secondary

#A67A3E

accent

#A040E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #183E71

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

Preview Lab → · Contrast checker → · Palette generator →