#273CA4#273CA4

#273CA4 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.169 H 268.7°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#273CA4
RGB	rgb(39, 60, 164)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 76%, 64%)
CMYK	cmyk(76.2%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(30.26, 29.77, -58.35)
CIE-LCH	lch(30.26, 65.51, 297.03°)
OKLab	oklab(41.04% -0.0037 -0.1687)
OKLCH	oklch(41.04% 0.169 268.7)
XYZ	xyz(9.1511, 6.3424, 35.8567)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CA4 #A48F27

analogous

#277BA4 #273CA4 #5127A4

triadic

#273CA4 #A4273C #3CA427

tetradic

#273CA4 #A4277B #A48F27 #27A451

square

#273CA4 #A4277B #A48F27 #27A451

split-complementary

#273CA4 #A45127 #7BA427

monochromatic

#0F1841 #1B2A73 #273CA4 #3852D0 #6A7DDC

Accessibility & contrast

On white

9.26

#273CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#273CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CA4

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CA4	#FFFFFF	#000000	##FFFFFF
##273CA4	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273ca4;
/* rgb */ color: rgb(39, 60, 164);
/* oklch */ color: oklch(41.0% 0.169 268.7);

Tailwind

colors: {
  custom: {
    50: '#7571c0',
    500: '#273ca4',
    950: '#000000',
  },
}

SCSS

$custom: #273ca4;
$custom-light: #7571c0;
$custom-dark: #000000;

JSON

{
  "hex": "#273ca4",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 229.92,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41041,
    "c": 0.16873,
    "h": 268.7
  },
  "luminance": 0.06343
}

Semantic roles & 50–950 ramp

primary

#273CA4

secondary

#C2B265

accent

#CA43E5

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273CA4

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

Preview Lab → · Contrast checker → · Palette generator →