#273F9F#273F9F

#273F9F is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.158 H 267.9°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#273F9F
RGB	rgb(39, 63, 159)
HSL	hsl(228, 61%, 39%)
HSV	hsv(228, 75%, 62%)
CMYK	cmyk(75.5%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(30.61, 25.88, -54.76)
CIE-LCH	lch(30.61, 60.56, 295.29°)
OKLab	oklab(41.17% -0.0058 -0.1581)
OKLCH	oklch(41.17% 0.158 267.9)
XYZ	xyz(8.8700, 6.4886, 33.5791)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273F9F #9F8727

analogous

#277B9F #273F9F #4B279F

triadic

#273F9F #9F273F #3F9F27

tetradic

#273F9F #9F277B #9F8727 #279F4B

square

#273F9F #9F277B #9F8727 #279F4B

split-complementary

#273F9F #9F4B27 #7B9F27

monochromatic

#0F183D #1B2C6E #273F9F #3654CE #677EDA

Accessibility & contrast

On white

9.14

#273F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#273F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273F9F

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273F9F	#FFFFFF	#000000	##FFFFFF
##273F9F	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00439D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273f9f;
/* rgb */ color: rgb(39, 63, 159);
/* oklch */ color: oklch(41.2% 0.158 267.9);

Tailwind

colors: {
  custom: {
    50: '#7373bc',
    500: '#273f9f',
    950: '#000000',
  },
}

SCSS

$custom: #273f9f;
$custom-light: #7373bc;
$custom-dark: #000000;

JSON

{
  "hex": "#273f9f",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 228,
    "s": 60.606,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4117,
    "c": 0.15821,
    "h": 267.9
  },
  "luminance": 0.0649
}

Semantic roles & 50–950 ramp

primary

#273F9F

secondary

#C0AD62

accent

#C444E4

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #273F9F

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

Preview Lab → · Contrast checker → · Palette generator →