#273F4E#273F4E

#273F4E is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.040 H 236.9°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#273F4E
RGB	rgb(39, 63, 78)
HSL	hsl(203, 33%, 23%)
HSV	hsv(203, 50%, 31%)
CMYK	cmyk(50%, 19.2%, 0%, 69.4%)
CIE-LAB	lab(25.37, -4.56, -11.99)
CIE-LCH	lch(25.37, 12.83, 249.17°)
OKLab	oklab(35.47% -0.0217 -0.0332)
OKLCH	oklch(35.47% 0.04 236.9)
XYZ	xyz(3.9889, 4.5361, 7.8716)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F4E #4E3627

analogous

#274E49 #273F4E #272B4E

triadic

#273F4E #4E273F #3F4E27

tetradic

#273F4E #49274E #4E3627 #2B4E27

square

#273F4E #49274E #4E3627 #2B4E27

split-complementary

#273F4E #4E272B #4E4927

monochromatic

#0A1014 #131E25 #273F4E #3B6077 #5081A0

Accessibility & contrast

On white

11.01

#273F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#273F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F4E

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F4E	#FFFFFF	#000000	##FFFFFF
##273F4E	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383F4F

Deuteranopia (green-blind)

#333A4E

Tritanopia (blue-blind)

#164344

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #273f4e;
/* rgb */ color: rgb(39, 63, 78);
/* oklch */ color: oklch(35.5% 0.040 236.9);

Tailwind

colors: {
  custom: {
    50: '#64747f',
    500: '#273f4e',
    950: '#000000',
  },
}

SCSS

$custom: #273f4e;
$custom-light: #64747f;
$custom-dark: #000000;

JSON

{
  "hex": "#273f4e",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 78
  },
  "hsl": {
    "h": 203.077,
    "s": 33.333,
    "l": 22.941
  },
  "oklch": {
    "l": 0.35471,
    "c": 0.03967,
    "h": 236.9
  },
  "luminance": 0.04536
}

Semantic roles & 50–950 ramp

primary

#273F4E

secondary

#816350

accent

#885EC9

background

#F6F7F7

surface

#EBEDEE

border

#C6C8C9

text

#05080A

muted

#7A7B7C

Preview Lab

Preview with #273F4E

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

Preview Lab → · Contrast checker → · Palette generator →