#273FAF#273FAF

#273FAF is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.180 H 268.1°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#273FAF
RGB	rgb(39, 63, 175)
HSL	hsl(229, 64%, 42%)
HSV	hsv(229, 78%, 69%)
CMYK	cmyk(77.7%, 64%, 0%, 31.4%)
CIE-LAB	lab(31.99, 31.91, -62.12)
CIE-LCH	lch(31.99, 69.83, 297.19°)
OKLab	oklab(42.61% -0.0059 -0.1797)
OKLCH	oklch(42.61% 0.18 268.1)
XYZ	xyz(10.3494, 7.0803, 41.3703)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FAF #AF9727

analogous

#2783AF #273FAF #5327AF

triadic

#273FAF #AF273F #3FAF27

tetradic

#273FAF #AF2783 #AF9727 #27AF53

square

#273FAF #AF2783 #AF9727 #27AF53

split-complementary

#273FAF #AF5327 #83AF27

monochromatic

#111B4B #1C2D7D #273FAF #3F59D4 #7185DF

Accessibility & contrast

On white

8.69

#273FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#273FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FAF

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FAF	#FFFFFF	#000000	##FFFFFF
##273FAF	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0045AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #273faf;
/* rgb */ color: rgb(39, 63, 175);
/* oklch */ color: oklch(42.6% 0.180 268.1);

Tailwind

colors: {
  custom: {
    50: '#7774c8',
    500: '#273faf',
    950: '#000000',
  },
}

SCSS

$custom: #273faf;
$custom-light: #7774c8;
$custom-dark: #000000;

JSON

{
  "hex": "#273faf",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 229.412,
    "s": 63.551,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42615,
    "c": 0.17978,
    "h": 268.1
  },
  "luminance": 0.07081
}

Semantic roles & 50–950 ramp

primary

#273FAF

secondary

#C6B66B

accent

#C941E7

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273FAF

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

Preview Lab → · Contrast checker → · Palette generator →