#273DA1#273DA1

#273DA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.163 H 268.5°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#273DA1
RGB	rgb(39, 61, 161)
HSL	hsl(229, 61%, 39%)
HSV	hsv(229, 76%, 63%)
CMYK	cmyk(75.8%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(30.26, 27.97, -56.55)
CIE-LCH	lch(30.26, 63.09, 296.32°)
OKLab	oklab(40.96% -0.0044 -0.1634)
OKLCH	oklch(40.96% 0.163 268.5)
XYZ	xyz(8.9362, 6.3411, 34.4643)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DA1 #A18B27

analogous

#277AA1 #273DA1 #4E27A1

triadic

#273DA1 #A1273D #3DA127

tetradic

#273DA1 #A1277A #A18B27 #27A14E

square

#273DA1 #A1277A #A18B27 #27A14E

split-complementary

#273DA1 #A14E27 #7AA127

monochromatic

#0F183E #1B2A70 #273DA1 #3752CE #687DDA

Accessibility & contrast

On white

9.26

#273DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#273DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DA1

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DA1	#FFFFFF	#000000	##FFFFFF
##273DA1	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273da1;
/* rgb */ color: rgb(39, 61, 161);
/* oklch */ color: oklch(41.0% 0.163 268.5);

Tailwind

colors: {
  custom: {
    50: '#7472be',
    500: '#273da1',
    950: '#000000',
  },
}

SCSS

$custom: #273da1;
$custom-light: #7472be;
$custom-dark: #000000;

JSON

{
  "hex": "#273da1",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 229.18,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40958,
    "c": 0.16344,
    "h": 268.5
  },
  "luminance": 0.06342
}

Semantic roles & 50–950 ramp

primary

#273DA1

secondary

#C0B063

accent

#C744E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273DA1

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

Preview Lab → · Contrast checker → · Palette generator →