#183E6B#183E6B

#183E6B is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.089 H 254.5°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#183E6B
RGB	rgb(24, 62, 107)
HSL	hsl(213, 63%, 26%)
HSV	hsv(213, 78%, 42%)
CMYK	cmyk(77.6%, 42.1%, 0%, 58%)
CIE-LAB	lab(25.86, 3.75, -30.10)
CIE-LCH	lch(25.86, 30.34, 277.11°)
OKLab	oklab(36.17% -0.0238 -0.0859)
OKLCH	oklch(36.17% 0.089 254.5)
XYZ	xyz(4.7522, 4.7004, 14.5639)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E6B #6B4518

analogous

#18676B #183E6B #1B186B

triadic

#183E6B #6B183E #3E6B18

tetradic

#183E6B #6B1867 #6B4518 #186B1B

square

#183E6B #6B1867 #6B4518 #186B1B

split-complementary

#183E6B #6B1B18 #676B18

monochromatic

#060E19 #0D2139 #183E6B #235B9D #2E78CF

Accessibility & contrast

On white

10.82

#183E6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183E6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E6B

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E6B	#FFFFFF	#000000	##FFFFFF
##183E6B	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)

#29416D

Deuteranopia (green-blind)

#1C3A6A

Tritanopia (blue-blind)

#00494F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183e6b;
/* rgb */ color: rgb(24, 62, 107);
/* oklch */ color: oklch(36.2% 0.089 254.5);

Tailwind

colors: {
  custom: {
    50: '#617295',
    500: '#183e6b',
    950: '#000000',
  },
}

SCSS

$custom: #183e6b;
$custom-light: #617295;
$custom-dark: #000000;

JSON

{
  "hex": "#183e6b",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 107
  },
  "hsl": {
    "h": 212.53,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.36167,
    "c": 0.08914,
    "h": 254.5
  },
  "luminance": 0.04701
}

Semantic roles & 50–950 ramp

primary

#183E6B

secondary

#A1743E

accent

#9B41E6

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #183E6B

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

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