#273CAF#273CAF

#273CAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.183 H 268.7°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#273CAF
RGB	rgb(39, 60, 175)
HSL	hsl(231, 64%, 42%)
HSV	hsv(231, 78%, 69%)
CMYK	cmyk(77.7%, 65.7%, 0%, 31.4%)
CIE-LAB	lab(31.25, 33.86, -63.33)
CIE-LCH	lch(31.25, 71.82, 298.13°)
OKLab	oklab(42.07% -0.0042 -0.1833)
OKLCH	oklch(42.07% 0.183 268.7)
XYZ	xyz(10.1877, 6.7571, 41.3164)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CAF #AF9A27

analogous

#2780AF #273CAF #5627AF

triadic

#273CAF #AF273C #3CAF27

tetradic

#273CAF #AF2780 #AF9A27 #27AF56

square

#273CAF #AF2780 #AF9A27 #27AF56

split-complementary

#273CAF #AF5627 #80AF27

monochromatic

#111A4B #1C2B7D #273CAF #3F56D4 #7182DF

Accessibility & contrast

On white

8.93

#273CAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#273CAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CAF

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CAF	#FFFFFF	#000000	##FFFFFF
##273CAF	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #273caf;
/* rgb */ color: rgb(39, 60, 175);
/* oklch */ color: oklch(42.1% 0.183 268.7);

Tailwind

colors: {
  custom: {
    50: '#7871c8',
    500: '#273caf',
    950: '#000000',
  },
}

SCSS

$custom: #273caf;
$custom-light: #7871c8;
$custom-dark: #000000;

JSON

{
  "hex": "#273caf",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 175
  },
  "hsl": {
    "h": 230.735,
    "s": 63.551,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4207,
    "c": 0.18332,
    "h": 268.7
  },
  "luminance": 0.06758
}

Semantic roles & 50–950 ramp

primary

#273CAF

secondary

#C6B86B

accent

#CD41E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #273CAF

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

Preview Lab → · Contrast checker → · Palette generator →