#273C8C#273C8C

#273C8C is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.135 H 268.3°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#273C8C
RGB	rgb(39, 60, 140)
HSL	hsl(228, 56%, 35%)
HSV	hsv(228, 72%, 55%)
CMYK	cmyk(72.1%, 57.1%, 0%, 45.1%)
CIE-LAB	lab(28.26, 20.62, -46.96)
CIE-LCH	lch(28.26, 51.29, 293.71°)
OKLab	oklab(38.93% -0.004 -0.1352)
OKLCH	oklch(38.93% 0.135 268.3)
XYZ	xyz(7.1846, 5.5558, 25.4996)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273C8C #8C7727

analogous

#276E8C #273C8C #45278C

triadic

#273C8C #8C273C #3C8C27

tetradic

#273C8C #8C276E #8C7727 #278C45

square

#273C8C #8C276E #8C7727 #278C45

split-complementary

#273C8C #8C4527 #6E8C27

monochromatic

#0C132C #1A275C #273C8C #3451BC #5C74D2

Accessibility & contrast

On white

9.95

#273C8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#273C8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273C8C

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273C8C	#FFFFFF	#000000	##FFFFFF
##273C8C	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478F

Deuteranopia (green-blind)

#003E8A

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #273c8c;
/* rgb */ color: rgb(39, 60, 140);
/* oklch */ color: oklch(38.9% 0.135 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f71ae',
    500: '#273c8c',
    950: '#000000',
  },
}

SCSS

$custom: #273c8c;
$custom-light: #6f71ae;
$custom-dark: #000000;

JSON

{
  "hex": "#273c8c",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 140
  },
  "hsl": {
    "h": 227.525,
    "s": 56.425,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38931,
    "c": 0.13531,
    "h": 268.3
  },
  "luminance": 0.05557
}

Semantic roles & 50–950 ramp

primary

#273C8C

secondary

#B7A358

accent

#C048E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #273C8C

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

Preview Lab → · Contrast checker → · Palette generator →