#4258CA#4258CA

#4258CA is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.178 H 270.5°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#4258CA
RGB	rgb(66, 88, 202)
HSL	hsl(230, 56%, 53%)
HSV	hsv(230, 67%, 79%)
CMYK	cmyk(67.3%, 56.4%, 0%, 20.8%)
CIE-LAB	lab(41.85, 28.99, -61.83)
CIE-LCH	lch(41.85, 68.29, 295.12°)
OKLab	oklab(50.98% 0.0017 -0.178)
OKLCH	oklch(50.98% 0.178 270.5)
XYZ	xyz(16.3935, 12.4004, 57.3952)
Luminance	0.1240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258CA #CAB442

analogous

#429CCA #4258CA #7042CA

triadic

#4258CA #CA4258 #58CA42

tetradic

#4258CA #CA429C #CAB442 #42CA70

square

#4258CA #CA429C #CAB442 #42CA70

split-complementary

#4258CA #CA7042 #9CCA42

monochromatic

#202D72 #2D40A2 #4258CA #7282D7 #A2ACE5

Accessibility & contrast

On white

6.03

#4258CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#4258CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258CA

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258CA	#FFFFFF	#000000	##FFFFFF
##4258CA	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CE

Deuteranopia (green-blind)

#005DC8

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4258ca;
/* rgb */ color: rgb(66, 88, 202);
/* oklch */ color: oklch(51.0% 0.178 270.5);

Tailwind

colors: {
  custom: {
    50: '#8686db',
    500: '#4258ca',
    950: '#000000',
  },
}

SCSS

$custom: #4258ca;
$custom-light: #8686db;
$custom-dark: #000000;

JSON

{
  "hex": "#4258ca",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 202
  },
  "hsl": {
    "h": 230.294,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.50979,
    "c": 0.17798,
    "h": 270.5
  },
  "luminance": 0.12402
}

Semantic roles & 50–950 ramp

primary

#4258CA

secondary

#D1C896

accent

#C748DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4258CA

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

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