#273DA3#273DA3

#273DA3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.166 H 268.5°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#273DA3
RGB	rgb(39, 61, 163)
HSL	hsl(229, 61%, 40%)
HSV	hsv(229, 76%, 64%)
CMYK	cmyk(76.1%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(30.43, 28.73, -57.47)
CIE-LCH	lch(30.43, 64.25, 296.56°)
OKLab	oklab(41.14% -0.0044 -0.1661)
OKLCH	oklch(41.14% 0.166 268.5)
XYZ	xyz(9.1140, 6.4122, 35.4006)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DA3 #A38D27

analogous

#277BA3 #273DA3 #4F27A3

triadic

#273DA3 #A3273D #3DA327

tetradic

#273DA3 #A3277B #A38D27 #27A34F

square

#273DA3 #A3277B #A38D27 #27A34F

split-complementary

#273DA3 #A34F27 #7BA327

monochromatic

#0F1840 #1B2B72 #273DA3 #3853CF #697DDB

Accessibility & contrast

On white

9.20

#273DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#273DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DA3

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DA3	#FFFFFF	#000000	##FFFFFF
##273DA3	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0042A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273da3;
/* rgb */ color: rgb(39, 61, 163);
/* oklch */ color: oklch(41.1% 0.166 268.5);

Tailwind

colors: {
  custom: {
    50: '#7572bf',
    500: '#273da3',
    950: '#000000',
  },
}

SCSS

$custom: #273da3;
$custom-light: #7572bf;
$custom-dark: #000000;

JSON

{
  "hex": "#273da3",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 229.355,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41139,
    "c": 0.16616,
    "h": 268.5
  },
  "luminance": 0.06413
}

Semantic roles & 50–950 ramp

primary

#273DA3

secondary

#C1B164

accent

#C843E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273DA3

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

Preview Lab → · Contrast checker → · Palette generator →