#273F8F#273F8F

#273F8F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.8% C 0.136 H 267.3°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#273F8F
RGB	rgb(39, 63, 143)
HSL	hsl(226, 57%, 36%)
HSV	hsv(226, 73%, 56%)
CMYK	cmyk(72.7%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(29.33, 19.73, -47.08)
CIE-LCH	lch(29.33, 51.04, 292.73°)
OKLab	oklab(39.81% -0.0064 -0.1355)
OKLCH	oklch(39.81% 0.136 267.3)
XYZ	xyz(7.5704, 5.9687, 26.7344)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F8F #8F7727

analogous

#27738F #273F8F #43278F

triadic

#273F8F #8F273F #3F8F27

tetradic

#273F8F #8F2773 #8F7727 #278F43

square

#273F8F #8F2773 #8F7727 #278F43

split-complementary

#273F8F #8F4327 #738F27

monochromatic

#0D152F #1A2A5F #273F8F #3454BF #5D79D3

Accessibility & contrast

On white

9.57

#273F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#273F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F8F

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F8F	#FFFFFF	#000000	##FFFFFF
##273F8F	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #273f8f;
/* rgb */ color: rgb(39, 63, 143);
/* oklch */ color: oklch(39.8% 0.136 267.3);

Tailwind

colors: {
  custom: {
    50: '#7073b0',
    500: '#273f8f',
    950: '#000000',
  },
}

SCSS

$custom: #273f8f;
$custom-light: #7073b0;
$custom-dark: #000000;

JSON

{
  "hex": "#273f8f",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 226.154,
    "s": 57.143,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3981,
    "c": 0.13568,
    "h": 267.3
  },
  "luminance": 0.0597
}

Semantic roles & 50–950 ramp

primary

#273F8F

secondary

#B8A25A

accent

#BD47E0

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #273F8F

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

Preview Lab → · Contrast checker → · Palette generator →