#273DA6#273DA6

#273DA6 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.170 H 268.5°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#273DA6
RGB	rgb(39, 61, 166)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 77%, 65%)
CMYK	cmyk(76.5%, 63.3%, 0%, 34.9%)
CIE-LAB	lab(30.69, 29.86, -58.85)
CIE-LCH	lch(30.69, 65.99, 296.90°)
OKLab	oklab(41.41% -0.0044 -0.1701)
OKLCH	oklch(41.41% 0.17 268.5)
XYZ	xyz(9.3860, 6.5210, 36.8330)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273DA6 #A69027

analogous

#277DA6 #273DA6 #5027A6

triadic

#273DA6 #A6273D #3DA627

tetradic

#273DA6 #A6277D #A69027 #27A650

square

#273DA6 #A6277D #A69027 #27A650

split-complementary

#273DA6 #A65027 #7DA627

monochromatic

#101943 #1B2B74 #273DA6 #3A54D1 #6B7FDC

Accessibility & contrast

On white

9.11

#273DA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#273DA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273DA6

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273DA6	#FFFFFF	#000000	##FFFFFF
##273DA6	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)

#004EA9

Deuteranopia (green-blind)

#0042A4

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #273da6;
/* rgb */ color: rgb(39, 61, 166);
/* oklch */ color: oklch(41.4% 0.170 268.5);

Tailwind

colors: {
  custom: {
    50: '#7572c1',
    500: '#273da6',
    950: '#000000',
  },
}

SCSS

$custom: #273da6;
$custom-light: #7572c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273da6",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 166
  },
  "hsl": {
    "h": 229.606,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41413,
    "c": 0.17021,
    "h": 268.5
  },
  "luminance": 0.06522
}

Semantic roles & 50–950 ramp

primary

#273DA6

secondary

#C3B366

accent

#C943E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273DA6

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

Preview Lab → · Contrast checker → · Palette generator →