#273B99#273B99

#273B99 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.155 H 268.9°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#273B99
RGB	rgb(39, 59, 153)
HSL	hsl(229, 59%, 38%)
HSV	hsv(229, 75%, 60%)
CMYK	cmyk(74.5%, 61.4%, 0%, 40%)
CIE-LAB	lab(29.05, 26.28, -53.66)
CIE-LCH	lch(29.05, 59.75, 296.09°)
OKLab	oklab(39.85% -0.0029 -0.1549)
OKLCH	oklch(39.85% 0.155 268.9)
XYZ	xyz(8.1485, 5.8583, 30.8321)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273B99 #998527

analogous

#277499 #273B99 #4C2799

triadic

#273B99 #99273B #3B9927

tetradic

#273B99 #992774 #998527 #27994C

square

#273B99 #992774 #998527 #27994C

split-complementary

#273B99 #994C27 #749927

monochromatic

#0E1537 #1B2868 #273B99 #334ECA #6378D7

Accessibility & contrast

On white

9.67

#273B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#273B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273B99

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273B99	#FFFFFF	#000000	##FFFFFF
##273B99	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #273b99;
/* rgb */ color: rgb(39, 59, 153);
/* oklch */ color: oklch(39.9% 0.155 268.9);

Tailwind

colors: {
  custom: {
    50: '#7270b8',
    500: '#273b99',
    950: '#000000',
  },
}

SCSS

$custom: #273b99;
$custom-light: #7270b8;
$custom-dark: #000000;

JSON

{
  "hex": "#273b99",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 229.474,
    "s": 59.375,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39853,
    "c": 0.15496,
    "h": 268.9
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary

#273B99

secondary

#BDAC5F

accent

#C745E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #273B99

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

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