#183E6E#183E6E

#183E6E is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.4% C 0.094 H 255.8°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#183E6E
RGB	rgb(24, 62, 110)
HSL	hsl(213, 64%, 26%)
HSV	hsv(213, 78%, 43%)
CMYK	cmyk(78.2%, 43.6%, 0%, 56.9%)
CIE-LAB	lab(26.05, 4.98, -31.72)
CIE-LCH	lch(26.05, 32.11, 278.93°)
OKLab	oklab(36.38% -0.023 -0.0906)
OKLCH	oklch(36.38% 0.094 255.8)
XYZ	xyz(4.9127, 4.7647, 15.4096)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E6E #6E4818

analogous

#18696E #183E6E #1D186E

triadic

#183E6E #6E183E #3E6E18

tetradic

#183E6E #6E1869 #6E4818 #186E1D

square

#183E6E #6E1869 #6E4818 #186E1D

split-complementary

#183E6E #6E1D18 #696E18

monochromatic

#050E19 #0D223C #183E6E #235AA0 #2F77D2

Accessibility & contrast

On white

10.75

#183E6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183E6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E6E

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E6E	#FFFFFF	#000000	##FFFFFF
##183E6E	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274270

Deuteranopia (green-blind)

#183A6D

Tritanopia (blue-blind)

#004950

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183e6e;
/* rgb */ color: rgb(24, 62, 110);
/* oklch */ color: oklch(36.4% 0.094 255.8);

Tailwind

colors: {
  custom: {
    50: '#627298',
    500: '#183e6e',
    950: '#000000',
  },
}

SCSS

$custom: #183e6e;
$custom-light: #627298;
$custom-dark: #000000;

JSON

{
  "hex": "#183e6e",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 110
  },
  "hsl": {
    "h": 213.488,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.36377,
    "c": 0.09352,
    "h": 255.8
  },
  "luminance": 0.04765
}

Semantic roles & 50–950 ramp

primary

#183E6E

secondary

#A4773E

accent

#9E41E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #183E6E

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

Preview Lab → · Contrast checker → · Palette generator →