#273DA2#273DA2

#273DA2 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.165 H 268.5°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#273DA2
RGB	rgb(39, 61, 162)
HSL	hsl(229, 61%, 39%)
HSV	hsv(229, 76%, 64%)
CMYK	cmyk(75.9%, 62.3%, 0%, 36.5%)
CIE-LAB	lab(30.34, 28.35, -57.01)
CIE-LCH	lch(30.34, 63.67, 296.44°)
OKLab	oklab(41.05% -0.0044 -0.1647)
OKLCH	oklch(41.05% 0.165 268.5)
XYZ	xyz(9.0248, 6.3765, 34.9306)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DA2 #A28C27

analogous

#277BA2 #273DA2 #4E27A2

triadic

#273DA2 #A2273D #3DA227

tetradic

#273DA2 #A2277B #A28C27 #27A24E

square

#273DA2 #A2277B #A28C27 #27A24E

split-complementary

#273DA2 #A24E27 #7BA227

monochromatic

#0F183F #1B2A71 #273DA2 #3752CF #697DDB

Accessibility & contrast

On white

9.23

#273DA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#273DA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DA2

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DA2	#FFFFFF	#000000	##FFFFFF
##273DA2	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA5

Deuteranopia (green-blind)

#0042A0

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273da2;
/* rgb */ color: rgb(39, 61, 162);
/* oklch */ color: oklch(41.0% 0.165 268.5);

Tailwind

colors: {
  custom: {
    50: '#7472be',
    500: '#273da2',
    950: '#000000',
  },
}

SCSS

$custom: #273da2;
$custom-light: #7472be;
$custom-dark: #000000;

JSON

{
  "hex": "#273da2",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 162
  },
  "hsl": {
    "h": 229.268,
    "s": 61.194,
    "l": 39.412
  },
  "oklch": {
    "l": 0.41049,
    "c": 0.1648,
    "h": 268.5
  },
  "luminance": 0.06377
}

Semantic roles & 50–950 ramp

primary

#273DA2

secondary

#C1B064

accent

#C843E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273DA2

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

Preview Lab → · Contrast checker → · Palette generator →