#273A63#273A63

#273A63 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.4% C 0.076 H 264.1°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#273A63
RGB	rgb(39, 58, 99)
HSL	hsl(221, 43%, 27%)
HSV	hsv(221, 61%, 39%)
CMYK	cmyk(60.6%, 41.4%, 0%, 61.2%)
CIE-LAB	lab(24.82, 6.27, -26.56)
CIE-LCH	lch(24.82, 27.29, 283.29°)
OKLab	oklab(35.4% -0.0077 -0.0753)
OKLCH	oklch(35.4% 0.076 264.1)
XYZ	xyz(4.6011, 4.3579, 12.4007)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273A63 #635027

analogous

#275863 #273A63 #322763

triadic

#273A63 #63273A #3A6327

tetradic

#273A63 #632758 #635027 #276332

square

#273A63 #632758 #635027 #276332

split-complementary

#273A63 #633227 #586327

monochromatic

#090D16 #162037 #273A63 #38548F #4C6EB8

Accessibility & contrast

On white

11.22

#273A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#273A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273A63

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273A63	#FFFFFF	#000000	##FFFFFF
##273A63	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293E65

Deuteranopia (green-blind)

#213862

Tritanopia (blue-blind)

#004349

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #273a63;
/* rgb */ color: rgb(39, 58, 99);
/* oklch */ color: oklch(35.4% 0.076 264.1);

Tailwind

colors: {
  custom: {
    50: '#676f8f',
    500: '#273a63',
    950: '#000000',
  },
}

SCSS

$custom: #273a63;
$custom-light: #676f8f;
$custom-dark: #000000;

JSON

{
  "hex": "#273a63",
  "rgb": {
    "r": 39,
    "g": 58,
    "b": 99
  },
  "hsl": {
    "h": 221,
    "s": 43.478,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35397,
    "c": 0.07573,
    "h": 264.1
  },
  "luminance": 0.04358
}

Semantic roles & 50–950 ramp

primary

#273A63

secondary

#968050

accent

#AB55D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #273A63

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

Preview Lab → · Contrast checker → · Palette generator →