#273DA0#273DA0

#273DA0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.162 H 268.5°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#273DA0
RGB	rgb(39, 61, 160)
HSL	hsl(229, 61%, 39%)
HSV	hsv(229, 76%, 63%)
CMYK	cmyk(75.6%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(30.17, 27.59, -56.08)
CIE-LCH	lch(30.17, 62.50, 296.20°)
OKLab	oklab(40.87% -0.0043 -0.162)
OKLCH	oklch(40.87% 0.162 268.5)
XYZ	xyz(8.8484, 6.3059, 34.0017)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DA0 #A08A27

analogous

#277AA0 #273DA0 #4E27A0

triadic

#273DA0 #A0273D #3DA027

tetradic

#273DA0 #A0277A #A08A27 #27A04E

square

#273DA0 #A0277A #A08A27 #27A04E

split-complementary

#273DA0 #A04E27 #7AA027

monochromatic

#0F173E #1B2A6F #273DA0 #3652CE #677CDA

Accessibility & contrast

On white

9.29

#273DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#273DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DA0

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DA0	#FFFFFF	#000000	##FFFFFF
##273DA0	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273da0;
/* rgb */ color: rgb(39, 61, 160);
/* oklch */ color: oklch(40.9% 0.162 268.5);

Tailwind

colors: {
  custom: {
    50: '#7472bd',
    500: '#273da0',
    950: '#000000',
  },
}

SCSS

$custom: #273da0;
$custom-light: #7472bd;
$custom-dark: #000000;

JSON

{
  "hex": "#273da0",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 229.091,
    "s": 60.804,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40868,
    "c": 0.16208,
    "h": 268.5
  },
  "luminance": 0.06307
}

Semantic roles & 50–950 ramp

primary

#273DA0

secondary

#C0AF63

accent

#C744E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273DA0

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

Preview Lab → · Contrast checker → · Palette generator →