#273B66#273B66

#273B66 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.079 H 264.0°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#273B66
RGB	rgb(39, 59, 102)
HSL	hsl(221, 45%, 28%)
HSV	hsv(221, 62%, 40%)
CMYK	cmyk(61.8%, 42.2%, 0%, 60%)
CIE-LAB	lab(25.32, 6.71, -27.72)
CIE-LCH	lch(25.32, 28.52, 283.60°)
OKLab	oklab(35.84% -0.0083 -0.0787)
OKLCH	oklch(35.84% 0.079 264)
XYZ	xyz(4.7981, 4.5182, 13.1870)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B66 #665227

analogous

#275B66 #273B66 #322766

triadic

#273B66 #66273B #3B6627

tetradic

#273B66 #66275B #665227 #276632

square

#273B66 #66275B #665227 #276632

split-complementary

#273B66 #663227 #5B6627

monochromatic

#080D16 #16213A #273B66 #385592 #4D70BB

Accessibility & contrast

On white

11.03

#273B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#273B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B66

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B66	#FFFFFF	#000000	##FFFFFF
##273B66	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293F68

Deuteranopia (green-blind)

#203965

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #273b66;
/* rgb */ color: rgb(39, 59, 102);
/* oklch */ color: oklch(35.8% 0.079 264.0);

Tailwind

colors: {
  custom: {
    50: '#677092',
    500: '#273b66',
    950: '#000000',
  },
}

SCSS

$custom: #273b66;
$custom-light: #677092;
$custom-dark: #000000;

JSON

{
  "hex": "#273b66",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 220.952,
    "s": 44.681,
    "l": 27.647
  },
  "oklch": {
    "l": 0.35838,
    "c": 0.07913,
    "h": 264
  },
  "luminance": 0.04519
}

Semantic roles & 50–950 ramp

primary

#273B66

secondary

#998250

accent

#AB53D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #273B66

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

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