#203DB3#203DB3

#203DB3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.189 H 266.7°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#203DB3
RGB	rgb(32, 61, 179)
HSL	hsl(228, 70%, 41%)
HSV	hsv(228, 82%, 70%)
CMYK	cmyk(82.1%, 65.9%, 0%, 29.8%)
CIE-LAB	lab(31.57, 34.08, -65.19)
CIE-LCH	lch(31.57, 73.56, 297.60°)
OKLab	oklab(42.34% -0.0108 -0.1888)
OKLCH	oklch(42.34% 0.189 266.7)
XYZ	xyz(10.3982, 6.8980, 43.4225)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#203DB3 #B39620

analogous

#2087B3 #203DB3 #4D20B3

triadic

#203DB3 #B3203D #3DB320

tetradic

#203DB3 #B32087 #B39620 #20B34D

square

#203DB3 #B32087 #B39620 #20B34D

split-complementary

#203DB3 #B34D20 #87B320

monochromatic

#0D1A4B #172B7F #203DB3 #3556DB #6981E4

Accessibility & contrast

On white

8.82

#203DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#203DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #203DB3

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##203DB3	#FFFFFF	#000000	##FFFFFF
##203DB3	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0043B1

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #203db3;
/* rgb */ color: rgb(32, 61, 179);
/* oklch */ color: oklch(42.3% 0.189 266.7);

Tailwind

colors: {
  custom: {
    50: '#7672cb',
    500: '#203db3',
    950: '#000000',
  },
}

SCSS

$custom: #203db3;
$custom-light: #7672cb;
$custom-dark: #000000;

JSON

{
  "hex": "#203db3",
  "rgb": {
    "r": 32,
    "g": 61,
    "b": 179
  },
  "hsl": {
    "h": 228.163,
    "s": 69.668,
    "l": 41.373
  },
  "oklch": {
    "l": 0.42342,
    "c": 0.18913,
    "h": 266.7
  },
  "luminance": 0.06899
}

Semantic roles & 50–950 ramp

primary

#203DB3

secondary

#CAB665

accent

#CA3BEC

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #203DB3

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

Preview Lab → · Contrast checker → · Palette generator →