#4253CF#4253CF

#4253CF is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.4% C 0.191 H 271.7°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#4253CF
RGB	rgb(66, 83, 207)
HSL	hsl(233, 59%, 54%)
HSV	hsv(233, 68%, 81%)
CMYK	cmyk(68.1%, 59.9%, 0%, 18.8%)
CIE-LAB	lab(40.97, 33.90, -66.13)
CIE-LCH	lch(40.97, 74.31, 297.14°)
OKLab	oklab(50.45% 0.0058 -0.1907)
OKLCH	oklch(50.45% 0.191 271.7)
XYZ	xyz(16.5987, 11.8482, 60.4316)
Luminance	0.1185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4253CF #CFBE42

analogous

#4299CF #4253CF #7742CF

triadic

#4253CF #CF4253 #53CF42

tetradic

#4253CF #CF4299 #CFBE42 #42CF77

square

#4253CF #CF4299 #CFBE42 #42CF77

split-complementary

#4253CF #CF7742 #99CF42

monochromatic

#1F2978 #2B3AA9 #4253CF #737FDB #A4ACE8

Accessibility & contrast

On white

6.23

#4253CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#4253CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4253CF

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4253CF	#FFFFFF	#000000	##FFFFFF
##4253CF	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D3

Deuteranopia (green-blind)

#005ACD

Tritanopia (blue-blind)

#007289

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4253cf;
/* rgb */ color: rgb(66, 83, 207);
/* oklch */ color: oklch(50.4% 0.191 271.7);

Tailwind

colors: {
  custom: {
    50: '#8783df',
    500: '#4253cf',
    950: '#000000',
  },
}

SCSS

$custom: #4253cf;
$custom-light: #8783df;
$custom-dark: #000000;

JSON

{
  "hex": "#4253cf",
  "rgb": {
    "r": 66,
    "g": 83,
    "b": 207
  },
  "hsl": {
    "h": 232.766,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.50449,
    "c": 0.19076,
    "h": 271.7
  },
  "luminance": 0.1185
}

Semantic roles & 50–950 ramp

primary

#4253CF

secondary

#D5CD98

accent

#D045E3

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4253CF

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

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