#273CA6#273CA6

#273CA6 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.171 H 268.7°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#273CA6
RGB	rgb(39, 60, 166)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 77%, 65%)
CMYK	cmyk(76.5%, 63.9%, 0%, 34.9%)
CIE-LAB	lab(30.44, 30.52, -59.27)
CIE-LCH	lch(30.44, 66.66, 297.24°)
OKLab	oklab(41.23% -0.0038 -0.1714)
OKLCH	oklch(41.23% 0.171 268.7)
XYZ	xyz(9.3331, 6.4152, 36.8154)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CA6 #A69127

analogous

#277BA6 #273CA6 #5227A6

triadic

#273CA6 #A6273C #3CA627

tetradic

#273CA6 #A6277B #A69127 #27A652

square

#273CA6 #A6277B #A69127 #27A652

split-complementary

#273CA6 #A65227 #7BA627

monochromatic

#101843 #1B2A74 #273CA6 #3A53D1 #6B7EDC

Accessibility & contrast

On white

9.20

#273CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#273CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CA6

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CA6	#FFFFFF	#000000	##FFFFFF
##273CA6	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)

#004EA9

Deuteranopia (green-blind)

#0042A4

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273ca6;
/* rgb */ color: rgb(39, 60, 166);
/* oklch */ color: oklch(41.2% 0.171 268.7);

Tailwind

colors: {
  custom: {
    50: '#7571c1',
    500: '#273ca6',
    950: '#000000',
  },
}

SCSS

$custom: #273ca6;
$custom-light: #7571c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273ca6",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 166
  },
  "hsl": {
    "h": 230.079,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41226,
    "c": 0.17141,
    "h": 268.7
  },
  "luminance": 0.06416
}

Semantic roles & 50–950 ramp

primary

#273CA6

secondary

#C3B366

accent

#CA43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273CA6

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

Preview Lab → · Contrast checker → · Palette generator →