#273EA3#273EA3

#273EA3 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.165 H 268.2°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#273EA3
RGB	rgb(39, 62, 163)
HSL	hsl(229, 61%, 40%)
HSV	hsv(229, 76%, 64%)
CMYK	cmyk(76.1%, 62%, 0%, 36.1%)
CIE-LAB	lab(30.69, 28.06, -57.05)
CIE-LCH	lch(30.69, 63.58, 296.19°)
OKLab	oklab(41.33% -0.0051 -0.1648)
OKLCH	oklch(41.33% 0.165 268.2)
XYZ	xyz(9.1679, 6.5199, 35.4185)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EA3 #A38C27

analogous

#277CA3 #273EA3 #4E27A3

triadic

#273EA3 #A3273E #3EA327

tetradic

#273EA3 #A3277C #A38C27 #27A34E

square

#273EA3 #A3277C #A38C27 #27A34E

split-complementary

#273EA3 #A34E27 #7CA327

monochromatic

#0F1840 #1B2B72 #273EA3 #3854CF #697EDB

Accessibility & contrast

On white

9.11

#273EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#273EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EA3

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EA3	#FFFFFF	#000000	##FFFFFF
##273EA3	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0043A1

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273ea3;
/* rgb */ color: rgb(39, 62, 163);
/* oklch */ color: oklch(41.3% 0.165 268.2);

Tailwind

colors: {
  custom: {
    50: '#7473bf',
    500: '#273ea3',
    950: '#000000',
  },
}

SCSS

$custom: #273ea3;
$custom-light: #7473bf;
$custom-dark: #000000;

JSON

{
  "hex": "#273ea3",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 163
  },
  "hsl": {
    "h": 228.871,
    "s": 61.386,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41331,
    "c": 0.16493,
    "h": 268.2
  },
  "luminance": 0.06521
}

Semantic roles & 50–950 ramp

primary

#273EA3

secondary

#C1B064

accent

#C743E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273EA3

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

Preview Lab → · Contrast checker → · Palette generator →