#203B99#203B99

#203B99 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.157 H 266.6°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#203B99
RGB	rgb(32, 59, 153)
HSL	hsl(227, 65%, 36%)
HSV	hsv(227, 79%, 60%)
CMYK	cmyk(79.1%, 61.4%, 0%, 40%)
CIE-LAB	lab(28.73, 25.47, -54.20)
CIE-LCH	lch(28.73, 59.88, 295.17°)
OKLab	oklab(39.53% -0.0093 -0.1567)
OKLCH	oklch(39.53% 0.157 266.6)
XYZ	xyz(7.9074, 5.7340, 30.8208)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203B99 #997E20

analogous

#207899 #203B99 #422099

triadic

#203B99 #99203B #3B9920

tetradic

#203B99 #992078 #997E20 #209942

square

#203B99 #992078 #997E20 #209942

split-complementary

#203B99 #994220 #789920

monochromatic

#0B1434 #152766 #203B99 #2B4FCC #5775DC

Accessibility & contrast

On white

9.78

#203B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#203B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203B99

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203B99	#FFFFFF	#000000	##FFFFFF
##203B99	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #203b99;
/* rgb */ color: rgb(32, 59, 153);
/* oklch */ color: oklch(39.5% 0.157 266.6);

Tailwind

colors: {
  custom: {
    50: '#7070b8',
    500: '#203b99',
    950: '#000000',
  },
}

SCSS

$custom: #203b99;
$custom-light: #7070b8;
$custom-dark: #000000;

JSON

{
  "hex": "#203b99",
  "rgb": {
    "r": 32,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 226.612,
    "s": 65.405,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39526,
    "c": 0.15692,
    "h": 266.6
  },
  "luminance": 0.05735
}

Semantic roles & 50–950 ramp

primary

#203B99

secondary

#C0A855

accent

#C33FE8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #203B99

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

Preview Lab → · Contrast checker → · Palette generator →