#203F9B#203F9B

#203F9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.155 H 265.6°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#203F9B
RGB	rgb(32, 63, 155)
HSL	hsl(225, 66%, 37%)
HSV	hsv(225, 79%, 61%)
CMYK	cmyk(79.4%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(29.98, 23.53, -53.38)
CIE-LCH	lch(29.98, 58.33, 293.79°)
OKLab	oklab(40.51% -0.0119 -0.1542)
OKLCH	oklch(40.51% 0.155 265.6)
XYZ	xyz(8.2875, 6.2277, 31.7693)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203F9B #9B7C20

analogous

#207D9B #203F9B #3F209B

triadic

#203F9B #9B203F #3F9B20

tetradic

#203F9B #9B207D #9B7C20 #209B3F

square

#203F9B #9B207D #9B7C20 #209B3F

split-complementary

#203F9B #9B3F20 #7D9B20

monochromatic

#0B1636 #162A68 #203F9B #2A54CE #597ADD

Accessibility & contrast

On white

9.35

#203F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#203F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203F9B

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203F9B	#FFFFFF	#000000	##FFFFFF
##203F9B	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #203f9b;
/* rgb */ color: rgb(32, 63, 155);
/* oklch */ color: oklch(40.5% 0.155 265.6);

Tailwind

colors: {
  custom: {
    50: '#7073b9',
    500: '#203f9b',
    950: '#000000',
  },
}

SCSS

$custom: #203f9b;
$custom-light: #7073b9;
$custom-dark: #000000;

JSON

{
  "hex": "#203f9b",
  "rgb": {
    "r": 32,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 224.878,
    "s": 65.775,
    "l": 36.667
  },
  "oklch": {
    "l": 0.4051,
    "c": 0.15465,
    "h": 265.6
  },
  "luminance": 0.06229
}

Semantic roles & 50–950 ramp

primary

#203F9B

secondary

#C1A656

accent

#BE3FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #203F9B

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

Preview Lab → · Contrast checker → · Palette generator →