#273DAE#273DAE

#273DAE is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.181 H 268.5°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#273DAE
RGB	rgb(39, 61, 174)
HSL	hsl(230, 63%, 42%)
HSV	hsv(230, 78%, 68%)
CMYK	cmyk(77.6%, 64.9%, 0%, 31.8%)
CIE-LAB	lab(31.40, 32.84, -62.48)
CIE-LCH	lch(31.40, 70.59, 297.73°)
OKLab	oklab(42.16% -0.0047 -0.1808)
OKLCH	oklch(42.16% 0.181 268.5)
XYZ	xyz(10.1428, 6.8237, 40.8187)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DAE #AE9827

analogous

#2781AE #273DAE #5527AE

triadic

#273DAE #AE273D #3DAE27

tetradic

#273DAE #AE2781 #AE9827 #27AE55

square

#273DAE #AE2781 #AE9827 #27AE55

split-complementary

#273DAE #AE5527 #81AE27

monochromatic

#111A4A #1C2B7C #273DAE #3E57D4 #7082DF

Accessibility & contrast

On white

8.88

#273DAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#273DAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DAE

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DAE	#FFFFFF	#000000	##FFFFFF
##273DAE	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0044AC

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273dae;
/* rgb */ color: rgb(39, 61, 174);
/* oklch */ color: oklch(42.2% 0.181 268.5);

Tailwind

colors: {
  custom: {
    50: '#7772c7',
    500: '#273dae',
    950: '#000000',
  },
}

SCSS

$custom: #273dae;
$custom-light: #7772c7;
$custom-dark: #000000;

JSON

{
  "hex": "#273dae",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 174
  },
  "hsl": {
    "h": 230.222,
    "s": 63.38,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42156,
    "c": 0.18083,
    "h": 268.5
  },
  "luminance": 0.06825
}

Semantic roles & 50–950 ramp

primary

#273DAE

secondary

#C6B76B

accent

#CC41E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273DAE

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

Preview Lab → · Contrast checker → · Palette generator →