#273AA8#273AA8

#273AA8 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.176 H 269.1°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#273AA8
RGB	rgb(39, 58, 168)
HSL	hsl(231, 62%, 41%)
HSV	hsv(231, 77%, 66%)
CMYK	cmyk(76.8%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(30.12, 32.57, -61.00)
CIE-LCH	lch(30.12, 69.15, 298.10°)
OKLab	oklab(41.05% -0.0026 -0.1764)
OKLCH	oklch(41.05% 0.176 269.1)
XYZ	xyz(9.4152, 6.2836, 37.7548)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273AA8 #A89527

analogous

#277AA8 #273AA8 #5427A8

triadic

#273AA8 #A8273A #3AA827

tetradic

#273AA8 #A8277A #A89527 #27A854

square

#273AA8 #A8277A #A89527 #27A854

split-complementary

#273AA8 #A85427 #7AA827

monochromatic

#101845 #1B2976 #273AA8 #3B51D1 #6C7DDD

Accessibility & contrast

On white

9.30

#273AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#273AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273AA8

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273AA8	#FFFFFF	#000000	##FFFFFF
##273AA8	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0041A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273aa8;
/* rgb */ color: rgb(39, 58, 168);
/* oklch */ color: oklch(41.0% 0.176 269.1);

Tailwind

colors: {
  custom: {
    50: '#7670c3',
    500: '#273aa8',
    950: '#000000',
  },
}

SCSS

$custom: #273aa8;
$custom-light: #7670c3;
$custom-dark: #000000;

JSON

{
  "hex": "#273aa8",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 231.163,
    "s": 62.319,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41046,
    "c": 0.17647,
    "h": 269.1
  },
  "luminance": 0.06285
}

Semantic roles & 50–950 ramp

primary

#273AA8

secondary

#C3B667

accent

#CD42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273AA8

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

Preview Lab → · Contrast checker → · Palette generator →