#183D61#183D61

#183D61 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.076 H 250.3°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#183D61
RGB	rgb(24, 61, 97)
HSL	hsl(210, 60%, 24%)
HSV	hsv(210, 75%, 38%)
CMYK	cmyk(75.3%, 37.1%, 0%, 62%)
CIE-LAB	lab(24.93, 0.36, -25.14)
CIE-LCH	lch(24.93, 25.14, 270.82°)
OKLab	oklab(35.24% -0.0255 -0.0714)
OKLCH	oklch(35.24% 0.076 250.3)
XYZ	xyz(4.2023, 4.3943, 11.9337)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D61 #613C18

analogous

#186160 #183D61 #181861

triadic

#183D61 #61183D #3D6118

tetradic

#183D61 #601861 #613C18 #186118

square

#183D61 #601861 #613C18 #186118

split-complementary

#183D61 #611818 #616018

monochromatic

#060F19 #0C1E30 #183D61 #245C92 #307BC3

Accessibility & contrast

On white

11.18

#183D61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#183D61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D61

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D61	#FFFFFF	#000000	##FFFFFF
##183D61	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3F63

Deuteranopia (green-blind)

#223860

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183d61;
/* rgb */ color: rgb(24, 61, 97);
/* oklch */ color: oklch(35.2% 0.076 250.3);

Tailwind

colors: {
  custom: {
    50: '#5f728e',
    500: '#183d61',
    950: '#000000',
  },
}

SCSS

$custom: #183d61;
$custom-light: #5f728e;
$custom-dark: #000000;

JSON

{
  "hex": "#183d61",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 97
  },
  "hsl": {
    "h": 209.589,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.35245,
    "c": 0.0758,
    "h": 250.3
  },
  "luminance": 0.04395
}

Semantic roles & 50–950 ramp

primary

#183D61

secondary

#976A3D

accent

#9344E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183D61

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

Preview Lab → · Contrast checker → · Palette generator →