#273EA6#273EA6

#273EA6 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.169 H 268.3°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#273EA6
RGB	rgb(39, 62, 166)
HSL	hsl(229, 62%, 40%)
HSV	hsv(229, 77%, 65%)
CMYK	cmyk(76.5%, 62.7%, 0%, 34.9%)
CIE-LAB	lab(30.95, 29.20, -58.44)
CIE-LCH	lch(30.95, 65.32, 296.55°)
OKLab	oklab(41.6% -0.0051 -0.1689)
OKLCH	oklch(41.6% 0.169 268.3)
XYZ	xyz(9.4399, 6.6287, 36.8510)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EA6 #A68F27

analogous

#277DA6 #273EA6 #5027A6

triadic

#273EA6 #A6273E #3EA627

tetradic

#273EA6 #A6277D #A68F27 #27A650

square

#273EA6 #A6277D #A68F27 #27A650

split-complementary

#273EA6 #A65027 #7DA627

monochromatic

#101943 #1B2B74 #273EA6 #3A55D1 #6B80DC

Accessibility & contrast

On white

9.03

#273EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#273EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EA6

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EA6	#FFFFFF	#000000	##FFFFFF
##273EA6	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273ea6;
/* rgb */ color: rgb(39, 62, 166);
/* oklch */ color: oklch(41.6% 0.169 268.3);

Tailwind

colors: {
  custom: {
    50: '#7573c1',
    500: '#273ea6',
    950: '#000000',
  },
}

SCSS

$custom: #273ea6;
$custom-light: #7573c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273ea6",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 166
  },
  "hsl": {
    "h": 229.134,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41602,
    "c": 0.16899,
    "h": 268.3
  },
  "luminance": 0.0663
}

Semantic roles & 50–950 ramp

primary

#273EA6

secondary

#C3B266

accent

#C843E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273EA6

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

Preview Lab → · Contrast checker → · Palette generator →