#273BA1#273BA1

#273BA1 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.6% C 0.166 H 269.0°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#273BA1
RGB	rgb(39, 59, 161)
HSL	hsl(230, 61%, 39%)
HSV	hsv(230, 76%, 63%)
CMYK	cmyk(75.8%, 63.4%, 0%, 36.9%)
CIE-LAB	lab(29.74, 29.30, -57.39)
CIE-LCH	lch(29.74, 64.44, 297.05°)
OKLab	oklab(40.58% -0.003 -0.1659)
OKLCH	oklch(40.58% 0.166 269)
XYZ	xyz(8.8315, 6.1315, 34.4294)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BA1 #A18D27

analogous

#2778A1 #273BA1 #5027A1

triadic

#273BA1 #A1273B #3BA127

tetradic

#273BA1 #A12778 #A18D27 #27A150

square

#273BA1 #A12778 #A18D27 #27A150

split-complementary

#273BA1 #A15027 #78A127

monochromatic

#0F173E #1B2970 #273BA1 #3750CE #687BDA

Accessibility & contrast

On white

9.43

#273BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#273BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BA1

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BA1	#FFFFFF	#000000	##FFFFFF
##273BA1	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #273ba1;
/* rgb */ color: rgb(39, 59, 161);
/* oklch */ color: oklch(40.6% 0.166 269.0);

Tailwind

colors: {
  custom: {
    50: '#7470be',
    500: '#273ba1',
    950: '#000000',
  },
}

SCSS

$custom: #273ba1;
$custom-light: #7470be;
$custom-dark: #000000;

JSON

{
  "hex": "#273ba1",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 161
  },
  "hsl": {
    "h": 230.164,
    "s": 61,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40577,
    "c": 0.16591,
    "h": 269
  },
  "luminance": 0.06132
}

Semantic roles & 50–950 ramp

primary

#273BA1

secondary

#C0B163

accent

#CA44E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273BA1

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

Preview Lab → · Contrast checker → · Palette generator →