#273FA7#273FA7

#273FA7 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.169 H 268.0°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#273FA7
RGB	rgb(39, 63, 167)
HSL	hsl(229, 62%, 40%)
HSV	hsv(229, 77%, 65%)
CMYK	cmyk(76.6%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(31.29, 28.91, -58.48)
CIE-LCH	lch(31.29, 65.23, 296.31°)
OKLab	oklab(41.88% -0.0058 -0.169)
OKLCH	oklch(41.88% 0.169 268)
XYZ	xyz(9.5868, 6.7753, 37.3542)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FA7 #A78F27

analogous

#277FA7 #273FA7 #4F27A7

triadic

#273FA7 #A7273F #3FA727

tetradic

#273FA7 #A7277F #A78F27 #27A74F

square

#273FA7 #A7277F #A78F27 #27A74F

split-complementary

#273FA7 #A74F27 #7FA727

monochromatic

#101A44 #1B2C75 #273FA7 #3A56D1 #6C81DD

Accessibility & contrast

On white

8.92

#273FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#273FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FA7

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FA7	#FFFFFF	#000000	##FFFFFF
##273FA7	1.00	8.92	2.36	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0044A5

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273fa7;
/* rgb */ color: rgb(39, 63, 167);
/* oklch */ color: oklch(41.9% 0.169 268.0);

Tailwind

colors: {
  custom: {
    50: '#7573c2',
    500: '#273fa7',
    950: '#000000',
  },
}

SCSS

$custom: #273fa7;
$custom-light: #7573c2;
$custom-dark: #000000;

JSON

{
  "hex": "#273fa7",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 228.75,
    "s": 62.136,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41883,
    "c": 0.16911,
    "h": 268
  },
  "luminance": 0.06776
}

Semantic roles & 50–950 ramp

primary

#273FA7

secondary

#C3B267

accent

#C743E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273FA7

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

Preview Lab → · Contrast checker → · Palette generator →