#273F66#273F66

#273F66 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.8% C 0.074 H 259.7°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#273F66
RGB	rgb(39, 63, 102)
HSL	hsl(217, 45%, 28%)
HSV	hsv(217, 62%, 40%)
CMYK	cmyk(61.8%, 38.2%, 0%, 60%)
CIE-LAB	lab(26.58, 3.97, -25.72)
CIE-LCH	lch(26.58, 26.02, 278.77°)
OKLab	oklab(36.82% -0.0132 -0.0728)
OKLCH	oklch(36.82% 0.074 259.7)
XYZ	xyz(5.0116, 4.9452, 13.2582)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F66 #664E27

analogous

#275E66 #273F66 #2E2766

triadic

#273F66 #66273F #3F6627

tetradic

#273F66 #66275E #664E27 #27662E

square

#273F66 #66275E #664E27 #27662E

split-complementary

#273F66 #662E27 #5E6627

monochromatic

#080E16 #16243A #273F66 #385A92 #4D77BB

Accessibility & contrast

On white

10.56

#273F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#273F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F66

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F66	#FFFFFF	#000000	##FFFFFF
##273F66	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4268

Deuteranopia (green-blind)

#273C65

Tritanopia (blue-blind)

#00484D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #273f66;
/* rgb */ color: rgb(39, 63, 102);
/* oklch */ color: oklch(36.8% 0.074 259.7);

Tailwind

colors: {
  custom: {
    50: '#677392',
    500: '#273f66',
    950: '#000000',
  },
}

SCSS

$custom: #273f66;
$custom-light: #677392;
$custom-dark: #000000;

JSON

{
  "hex": "#273f66",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 102
  },
  "hsl": {
    "h": 217.143,
    "s": 44.681,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36817,
    "c": 0.074,
    "h": 259.7
  },
  "luminance": 0.04946
}

Semantic roles & 50–950 ramp

primary

#273F66

secondary

#997D50

accent

#A353D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080D

muted

#7A7B7D

Preview Lab

Preview with #273F66

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

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