#273BAE#273BAE

#273BAE is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.183 H 268.9°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#273BAE
RGB	rgb(39, 59, 174)
HSL	hsl(231, 63%, 42%)
HSV	hsv(231, 78%, 68%)
CMYK	cmyk(77.6%, 66.1%, 0%, 31.8%)
CIE-LAB	lab(30.91, 34.14, -63.29)
CIE-LCH	lch(30.91, 71.91, 298.34°)
OKLab	oklab(41.8% -0.0036 -0.1831)
OKLCH	oklch(41.8% 0.183 268.9)
XYZ	xyz(10.0380, 6.6141, 40.7838)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BAE #AE9A27

analogous

#277FAE #273BAE #5727AE

triadic

#273BAE #AE273B #3BAE27

tetradic

#273BAE #AE277F #AE9A27 #27AE57

square

#273BAE #AE277F #AE9A27 #27AE57

split-complementary

#273BAE #AE5727 #7FAE27

monochromatic

#11194A #1C2A7C #273BAE #3E55D4 #7081DF

Accessibility & contrast

On white

9.04

#273BAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#273BAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BAE

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BAE	#FFFFFF	#000000	##FFFFFF
##273BAE	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB2

Deuteranopia (green-blind)

#0042AC

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273bae;
/* rgb */ color: rgb(39, 59, 174);
/* oklch */ color: oklch(41.8% 0.183 268.9);

Tailwind

colors: {
  custom: {
    50: '#7771c7',
    500: '#273bae',
    950: '#000000',
  },
}

SCSS

$custom: #273bae;
$custom-light: #7771c7;
$custom-dark: #000000;

JSON

{
  "hex": "#273bae",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 174
  },
  "hsl": {
    "h": 231.111,
    "s": 63.38,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41797,
    "c": 0.18317,
    "h": 268.9
  },
  "luminance": 0.06615
}

Semantic roles & 50–950 ramp

primary

#273BAE

secondary

#C6B86B

accent

#CE41E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273BAE

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

Preview Lab → · Contrast checker → · Palette generator →