#4253B3#4253B3

#4253B3 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.2% C 0.153 H 271.9°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#4253B3
RGB	rgb(66, 83, 179)
HSL	hsl(231, 46%, 48%)
HSV	hsv(231, 63%, 70%)
CMYK	cmyk(63.1%, 53.6%, 0%, 29.8%)
CIE-LAB	lab(38.90, 24.09, -53.19)
CIE-LCH	lch(38.90, 58.39, 294.37°)
OKLab	oklab(48.24% 0.0051 -0.1526)
OKLCH	oklch(48.24% 0.153 271.9)
XYZ	xyz(13.4740, 10.5983, 43.9747)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4253B3 #B3A242

analogous

#428CB3 #4253B3 #6942B3

triadic

#4253B3 #B34253 #53B342

tetradic

#4253B3 #B3428C #B3A242 #42B369

square

#4253B3 #B3428C #B3A242 #42B369

split-complementary

#4253B3 #B36942 #8CB342

monochromatic

#212A5A #323E86 #4253B3 #6A78C8 #97A1D9

Accessibility & contrast

On white

6.73

#4253B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#4253B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4253B3

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4253B3	#FFFFFF	#000000	##FFFFFF
##4253B3	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1461B6

Deuteranopia (green-blind)

#0057B1

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4253b3;
/* rgb */ color: rgb(66, 83, 179);
/* oklch */ color: oklch(48.2% 0.153 271.9);

Tailwind

colors: {
  custom: {
    50: '#8283ca',
    500: '#4253b3',
    950: '#000000',
  },
}

SCSS

$custom: #4253b3;
$custom-light: #8283ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4253b3",
  "rgb": {
    "r": 66,
    "g": 83,
    "b": 179
  },
  "hsl": {
    "h": 230.973,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.48243,
    "c": 0.1527,
    "h": 271.9
  },
  "luminance": 0.10599
}

Semantic roles & 50–950 ramp

primary

#4253B3

secondary

#C4BC8C

accent

#C252D6

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4253B3

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

Preview Lab → · Contrast checker → · Palette generator →