#203FBC#203FBC

#203FBC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.198 H 266.5°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#203FBC
RGB	rgb(32, 63, 188)
HSL	hsl(228, 71%, 43%)
HSV	hsv(228, 83%, 74%)
CMYK	cmyk(83%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(32.90, 36.14, -68.34)
CIE-LCH	lch(32.90, 77.30, 297.87°)
OKLab	oklab(43.57% -0.0122 -0.198)
OKLCH	oklch(43.57% 0.198 266.5)
XYZ	xyz(11.4471, 7.4915, 48.4099)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203FBC #BC9D20

analogous

#208DBC #203FBC #4F20BC

triadic

#203FBC #BC203F #3FBC20

tetradic

#203FBC #BC208D #BC9D20 #20BC4F

square

#203FBC #BC208D #BC9D20 #20BC4F

split-complementary

#203FBC #BC4F20 #8DBC20

monochromatic

#0E1C53 #172D88 #203FBC #3B5CDE #7087E7

Accessibility & contrast

On white

8.40

#203FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#203FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203FBC

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203FBC	#FFFFFF	#000000	##FFFFFF
##203FBC	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#0046BA

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #203fbc;
/* rgb */ color: rgb(32, 63, 188);
/* oklch */ color: oklch(43.6% 0.198 266.5);

Tailwind

colors: {
  custom: {
    50: '#7974d1',
    500: '#203fbc',
    950: '#000000',
  },
}

SCSS

$custom: #203fbc;
$custom-light: #7974d1;
$custom-dark: #000000;

JSON

{
  "hex": "#203fbc",
  "rgb": {
    "r": 32,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 228.077,
    "s": 70.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43571,
    "c": 0.19836,
    "h": 266.5
  },
  "luminance": 0.07493
}

Semantic roles & 50–950 ramp

primary

#203FBC

secondary

#CDBA6B

accent

#CA3AEE

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #203FBC

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

Preview Lab → · Contrast checker → · Palette generator →