#273C91#273C91

#273C91 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.4% C 0.142 H 268.5°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#273C91
RGB	rgb(39, 60, 145)
HSL	hsl(228, 58%, 36%)
HSV	hsv(228, 73%, 57%)
CMYK	cmyk(73.1%, 58.6%, 0%, 43.1%)
CIE-LAB	lab(28.66, 22.55, -49.40)
CIE-LCH	lch(28.66, 54.30, 294.53°)
OKLab	oklab(39.35% -0.0038 -0.1424)
OKLCH	oklch(39.35% 0.142 268.5)
XYZ	xyz(7.5616, 5.7066, 27.4856)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C91 #917C27

analogous

#277191 #273C91 #472791

triadic

#273C91 #91273C #3C9127

tetradic

#273C91 #912771 #917C27 #279147

square

#273C91 #912771 #917C27 #279147

split-complementary

#273C91 #914727 #719127

monochromatic

#0D1431 #1A2861 #273C91 #3450C1 #5F76D4

Accessibility & contrast

On white

9.81

#273C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#273C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C91

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C91	#FFFFFF	#000000	##FFFFFF
##273C91	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004994

Deuteranopia (green-blind)

#003F8F

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273c91;
/* rgb */ color: rgb(39, 60, 145);
/* oklch */ color: oklch(39.4% 0.142 268.5);

Tailwind

colors: {
  custom: {
    50: '#7071b2',
    500: '#273c91',
    950: '#000000',
  },
}

SCSS

$custom: #273c91;
$custom-light: #7071b2;
$custom-dark: #000000;

JSON

{
  "hex": "#273c91",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 145
  },
  "hsl": {
    "h": 228.113,
    "s": 57.609,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39354,
    "c": 0.14246,
    "h": 268.5
  },
  "luminance": 0.05707
}

Semantic roles & 50–950 ramp

primary

#273C91

secondary

#B9A65B

accent

#C247E1

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #273C91

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

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