#203FB3#203FB3

#203FB3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.187 H 266.4°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#203FB3
RGB	rgb(32, 63, 179)
HSL	hsl(227, 70%, 41%)
HSV	hsv(227, 82%, 70%)
CMYK	cmyk(82.1%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(32.07, 32.77, -64.38)
CIE-LCH	lch(32.07, 72.24, 296.98°)
OKLab	oklab(42.71% -0.0118 -0.1864)
OKLCH	oklch(42.71% 0.187 266.4)
XYZ	xyz(10.5070, 7.1155, 43.4587)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203FB3 #B39420

analogous

#2089B3 #203FB3 #4B20B3

triadic

#203FB3 #B3203F #3FB320

tetradic

#203FB3 #B32089 #B39420 #20B34B

square

#203FB3 #B32089 #B39420 #20B34B

split-complementary

#203FB3 #B34B20 #89B320

monochromatic

#0D1A4B #172D7F #203FB3 #3558DB #6983E4

Accessibility & contrast

On white

8.67

#203FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#203FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203FB3

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203FB3	#FFFFFF	#000000	##FFFFFF
##203FB3	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #203fb3;
/* rgb */ color: rgb(32, 63, 179);
/* oklch */ color: oklch(42.7% 0.187 266.4);

Tailwind

colors: {
  custom: {
    50: '#7673cb',
    500: '#203fb3',
    950: '#000000',
  },
}

SCSS

$custom: #203fb3;
$custom-light: #7673cb;
$custom-dark: #000000;

JSON

{
  "hex": "#203fb3",
  "rgb": {
    "r": 32,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 227.347,
    "s": 69.668,
    "l": 41.373
  },
  "oklch": {
    "l": 0.42706,
    "c": 0.18679,
    "h": 266.4
  },
  "luminance": 0.07117
}

Semantic roles & 50–950 ramp

primary

#203FB3

secondary

#CAB565

accent

#C73BEC

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #203FB3

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

Preview Lab → · Contrast checker → · Palette generator →