#273EB0#273EB0

#273EB0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.182 H 268.3°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#273EB0
RGB	rgb(39, 62, 176)
HSL	hsl(230, 64%, 42%)
HSV	hsv(230, 78%, 69%)
CMYK	cmyk(77.8%, 64.8%, 0%, 31%)
CIE-LAB	lab(31.83, 32.93, -62.97)
CIE-LCH	lch(31.83, 71.07, 297.61°)
OKLab	oklab(42.53% -0.0054 -0.1822)
OKLCH	oklch(42.53% 0.182 268.3)
XYZ	xyz(10.3931, 7.0100, 41.8712)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EB0 #B09927

analogous

#2783B0 #273EB0 #5527B0

triadic

#273EB0 #B0273E #3EB027

tetradic

#273EB0 #B02783 #B09927 #27B055

square

#273EB0 #B02783 #B09927 #27B055

split-complementary

#273EB0 #B05527 #83B027

monochromatic

#111B4C #1C2C7E #273EB0 #4059D5 #7284E0

Accessibility & contrast

On white

8.74

#273EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#273EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EB0

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EB0	#FFFFFF	#000000	##FFFFFF
##273EB0	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #273eb0;
/* rgb */ color: rgb(39, 62, 176);
/* oklch */ color: oklch(42.5% 0.182 268.3);

Tailwind

colors: {
  custom: {
    50: '#7873c9',
    500: '#273eb0',
    950: '#000000',
  },
}

SCSS

$custom: #273eb0;
$custom-light: #7873c9;
$custom-dark: #000000;

JSON

{
  "hex": "#273eb0",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 229.927,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42526,
    "c": 0.18228,
    "h": 268.3
  },
  "luminance": 0.07011
}

Semantic roles & 50–950 ramp

primary

#273EB0

secondary

#C7B86C

accent

#CB41E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273EB0

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

Preview Lab → · Contrast checker → · Palette generator →