#273FAD#273FAD

#273FAD is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.177 H 268.1°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#273FAD
RGB	rgb(39, 63, 173)
HSL	hsl(229, 63%, 42%)
HSV	hsv(229, 77%, 68%)
CMYK	cmyk(77.5%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(31.81, 31.16, -61.21)
CIE-LCH	lch(31.81, 68.69, 296.98°)
OKLab	oklab(42.43% -0.0059 -0.177)
OKLCH	oklch(42.43% 0.177 268.1)
XYZ	xyz(10.1544, 7.0023, 40.3435)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FAD #AD9527

analogous

#2782AD #273FAD #5227AD

triadic

#273FAD #AD273F #3FAD27

tetradic

#273FAD #AD2782 #AD9527 #27AD52

square

#273FAD #AD2782 #AD9527 #27AD52

split-complementary

#273FAD #AD5227 #82AD27

monochromatic

#101B49 #1C2D7B #273FAD #3E59D3 #7084DF

Accessibility & contrast

On white

8.75

#273FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#273FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FAD

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FAD	#FFFFFF	#000000	##FFFFFF
##273FAD	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #273fad;
/* rgb */ color: rgb(39, 63, 173);
/* oklch */ color: oklch(42.4% 0.177 268.1);

Tailwind

colors: {
  custom: {
    50: '#7774c6',
    500: '#273fad',
    950: '#000000',
  },
}

SCSS

$custom: #273fad;
$custom-light: #7774c6;
$custom-dark: #000000;

JSON

{
  "hex": "#273fad",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 229.254,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42431,
    "c": 0.17714,
    "h": 268.1
  },
  "luminance": 0.07003
}

Semantic roles & 50–950 ramp

primary

#273FAD

secondary

#C6B56A

accent

#C942E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273FAD

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

Preview Lab → · Contrast checker → · Palette generator →