#203F8B#203F8B

#203F8B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.132 H 264.4°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#203F8B
RGB	rgb(32, 63, 139)
HSL	hsl(223, 63%, 34%)
HSV	hsv(223, 77%, 55%)
CMYK	cmyk(77%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(28.71, 17.19, -45.64)
CIE-LCH	lch(28.71, 48.77, 290.64°)
OKLab	oklab(39.15% -0.013 -0.1314)
OKLCH	oklch(39.15% 0.132 264.4)
XYZ	xyz(7.0317, 5.7254, 25.1556)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203F8B #8B6C20

analogous

#20748B #203F8B #36208B

triadic

#203F8B #8B203F #3F8B20

tetradic

#203F8B #8B2074 #8B6C20 #208B36

square

#203F8B #8B2074 #8B6C20 #208B36

split-complementary

#203F8B #8B3620 #748B20

monochromatic

#091228 #152859 #203F8B #2B56BD #4F76D6

Accessibility & contrast

On white

9.79

#203F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#203F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203F8B

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203F8B	#FFFFFF	#000000	##FFFFFF
##203F8B	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05498E

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #203f8b;
/* rgb */ color: rgb(32, 63, 139);
/* oklch */ color: oklch(39.2% 0.132 264.4);

Tailwind

colors: {
  custom: {
    50: '#6c73ad',
    500: '#203f8b',
    950: '#000000',
  },
}

SCSS

$custom: #203f8b;
$custom-light: #6c73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#203f8b",
  "rgb": {
    "r": 32,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 222.617,
    "s": 62.573,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39153,
    "c": 0.13208,
    "h": 264.4
  },
  "luminance": 0.05726
}

Semantic roles & 50–950 ramp

primary

#203F8B

secondary

#BA9A4D

accent

#B642E6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #203F8B

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

Preview Lab → · Contrast checker → · Palette generator →