#183E70#183E70

#183E70 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.5% C 0.096 H 256.5°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#183E70
RGB	rgb(24, 62, 112)
HSL	hsl(214, 65%, 27%)
HSV	hsv(214, 79%, 44%)
CMYK	cmyk(78.6%, 44.6%, 0%, 56.1%)
CIE-LAB	lab(26.18, 5.81, -32.79)
CIE-LCH	lch(26.18, 33.30, 280.05°)
OKLab	oklab(36.52% -0.0225 -0.0938)
OKLCH	oklch(36.52% 0.096 256.5)
XYZ	xyz(5.0229, 4.8087, 15.9895)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E70 #704A18

analogous

#186A70 #183E70 #1E1870

triadic

#183E70 #70183E #3E7018

tetradic

#183E70 #70186A #704A18 #18701E

square

#183E70 #70186A #704A18 #18701E

split-complementary

#183E70 #701E18 #6A7018

monochromatic

#050E19 #0D223E #183E70 #235AA2 #3076D3

Accessibility & contrast

On white

10.70

#183E70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#183E70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E70

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E70	#FFFFFF	#000000	##FFFFFF
##183E70	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254272

Deuteranopia (green-blind)

#163A6F

Tritanopia (blue-blind)

#004A51

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183e70;
/* rgb */ color: rgb(24, 62, 112);
/* oklch */ color: oklch(36.5% 0.096 256.5);

Tailwind

colors: {
  custom: {
    50: '#637299',
    500: '#183e70',
    950: '#000000',
  },
}

SCSS

$custom: #183e70;
$custom-light: #637299;
$custom-dark: #000000;

JSON

{
  "hex": "#183e70",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 112
  },
  "hsl": {
    "h": 214.091,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.36519,
    "c": 0.09646,
    "h": 256.5
  },
  "luminance": 0.04809
}

Semantic roles & 50–950 ramp

primary

#183E70

secondary

#A5793E

accent

#9F40E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #183E70

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

Preview Lab → · Contrast checker → · Palette generator →