#273F8D#273F8D

#273F8D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.133 H 267.2°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#273F8D
RGB	rgb(39, 63, 141)
HSL	hsl(226, 57%, 35%)
HSV	hsv(226, 72%, 55%)
CMYK	cmyk(72.3%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(29.18, 18.95, -46.09)
CIE-LCH	lch(29.18, 49.84, 292.35°)
OKLab	oklab(39.65% -0.0066 -0.1326)
OKLCH	oklch(39.65% 0.133 267.2)
XYZ	xyz(7.4203, 5.9087, 25.9436)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F8D #8D7527

analogous

#27728D #273F8D #42278D

triadic

#273F8D #8D273F #3F8D27

tetradic

#273F8D #8D2772 #8D7527 #278D42

square

#273F8D #8D2772 #8D7527 #278D42

split-complementary

#273F8D #8D4227 #728D27

monochromatic

#0C142D #1A2A5D #273F8D #3454BD #5C78D2

Accessibility & contrast

On white

9.63

#273F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#273F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F8D

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F8D	#FFFFFF	#000000	##FFFFFF
##273F8D	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#034A90

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273f8d;
/* rgb */ color: rgb(39, 63, 141);
/* oklch */ color: oklch(39.6% 0.133 267.2);

Tailwind

colors: {
  custom: {
    50: '#6f73af',
    500: '#273f8d',
    950: '#000000',
  },
}

SCSS

$custom: #273f8d;
$custom-light: #6f73af;
$custom-dark: #000000;

JSON

{
  "hex": "#273f8d",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 225.882,
    "s": 56.667,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39647,
    "c": 0.1328,
    "h": 267.2
  },
  "luminance": 0.05909
}

Semantic roles & 50–950 ramp

primary

#273F8D

secondary

#B7A159

accent

#BC48E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #273F8D

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

Preview Lab → · Contrast checker → · Palette generator →