#273EA8#273EA8

#273EA8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.172 H 268.3°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#273EA8
RGB	rgb(39, 62, 168)
HSL	hsl(229, 62%, 41%)
HSV	hsv(229, 77%, 66%)
CMYK	cmyk(76.8%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(31.12, 29.95, -59.35)
CIE-LCH	lch(31.12, 66.48, 296.77°)
OKLab	oklab(41.78% -0.0051 -0.1716)
OKLCH	oklch(41.78% 0.172 268.3)
XYZ	xyz(9.6248, 6.7027, 37.8247)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EA8 #A89127

analogous

#277FA8 #273EA8 #5027A8

triadic

#273EA8 #A8273E #3EA827

tetradic

#273EA8 #A8277F #A89127 #27A850

square

#273EA8 #A8277F #A89127 #27A850

split-complementary

#273EA8 #A85027 #7FA827

monochromatic

#101945 #1B2C76 #273EA8 #3B56D1 #6C80DD

Accessibility & contrast

On white

8.97

#273EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#273EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EA8

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EA8	#FFFFFF	#000000	##FFFFFF
##273EA8	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273ea8;
/* rgb */ color: rgb(39, 62, 168);
/* oklch */ color: oklch(41.8% 0.172 268.3);

Tailwind

colors: {
  custom: {
    50: '#7673c3',
    500: '#273ea8',
    950: '#000000',
  },
}

SCSS

$custom: #273ea8;
$custom-light: #7673c3;
$custom-dark: #000000;

JSON

{
  "hex": "#273ea8",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 229.302,
    "s": 62.319,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41784,
    "c": 0.17168,
    "h": 268.3
  },
  "luminance": 0.06704
}

Semantic roles & 50–950 ramp

primary

#273EA8

secondary

#C3B367

accent

#C842E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273EA8

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

Preview Lab → · Contrast checker → · Palette generator →