#4253CB#4253CB

#4253CB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.1% C 0.185 H 271.8°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#4253CB
RGB	rgb(66, 83, 203)
HSL	hsl(233, 57%, 53%)
HSV	hsv(233, 67%, 80%)
CMYK	cmyk(67.5%, 59.1%, 0%, 20.4%)
CIE-LAB	lab(40.66, 32.51, -64.33)
CIE-LCH	lch(40.66, 72.07, 296.81°)
OKLab	oklab(50.12% 0.0058 -0.1854)
OKLCH	oklch(50.12% 0.185 271.8)
XYZ	xyz(16.1159, 11.6551, 57.8887)
Luminance	0.1166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4253CB #CBBA42

analogous

#4297CB #4253CB #7642CB

triadic

#4253CB #CB4253 #53CB42

tetradic

#4253CB #CB4297 #CBBA42 #42CB76

square

#4253CB #CB4297 #CBBA42 #42CB76

split-complementary

#4253CB #CB7642 #97CB42

monochromatic

#202A73 #2D3BA3 #4253CB #727FD8 #A2AAE5

Accessibility & contrast

On white

6.30

#4253CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#4253CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4253CB

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4253CB	#FFFFFF	#000000	##FFFFFF
##4253CB	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CF

Deuteranopia (green-blind)

#005AC9

Tritanopia (blue-blind)

#007187

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4253cb;
/* rgb */ color: rgb(66, 83, 203);
/* oklch */ color: oklch(50.1% 0.185 271.8);

Tailwind

colors: {
  custom: {
    50: '#8683dc',
    500: '#4253cb',
    950: '#000000',
  },
}

SCSS

$custom: #4253cb;
$custom-light: #8683dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4253cb",
  "rgb": {
    "r": 66,
    "g": 83,
    "b": 203
  },
  "hsl": {
    "h": 232.555,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.50121,
    "c": 0.18547,
    "h": 271.8
  },
  "luminance": 0.11657
}

Semantic roles & 50–950 ramp

primary

#4253CB

secondary

#D2CB97

accent

#CD48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #4253CB

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

Preview Lab → · Contrast checker → · Palette generator →