#203B9B#203B9B

#203B9B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.160 H 266.7°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#203B9B
RGB	rgb(32, 59, 155)
HSL	hsl(227, 66%, 37%)
HSV	hsv(227, 79%, 61%)
CMYK	cmyk(79.4%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(28.90, 26.25, -55.13)
CIE-LCH	lch(28.90, 61.06, 295.46°)
OKLab	oklab(39.71% -0.0092 -0.1594)
OKLCH	oklch(39.71% 0.16 266.7)
XYZ	xyz(8.0740, 5.8006, 31.6981)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203B9B #9B8020

analogous

#20799B #203B9B #43209B

triadic

#203B9B #9B203B #3B9B20

tetradic

#203B9B #9B2079 #9B8020 #209B43

square

#203B9B #9B2079 #9B8020 #209B43

split-complementary

#203B9B #9B4320 #799B20

monochromatic

#0B1436 #162868 #203B9B #2A4ECE #5976DD

Accessibility & contrast

On white

9.72

#203B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#203B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203B9B

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203B9B	#FFFFFF	#000000	##FFFFFF
##203B9B	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #203b9b;
/* rgb */ color: rgb(32, 59, 155);
/* oklch */ color: oklch(39.7% 0.160 266.7);

Tailwind

colors: {
  custom: {
    50: '#7070b9',
    500: '#203b9b',
    950: '#000000',
  },
}

SCSS

$custom: #203b9b;
$custom-light: #7070b9;
$custom-dark: #000000;

JSON

{
  "hex": "#203b9b",
  "rgb": {
    "r": 32,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 226.829,
    "s": 65.775,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39708,
    "c": 0.15967,
    "h": 266.7
  },
  "luminance": 0.05802
}

Semantic roles & 50–950 ramp

primary

#203B9B

secondary

#C1A956

accent

#C33FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #203B9B

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

Preview Lab → · Contrast checker → · Palette generator →