#4275C8#4275C8

#4275C8 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 56.8% C 0.140 H 259.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4275C8
RGB	rgb(66, 117, 200)
HSL	hsl(217, 55%, 52%)
HSV	hsv(217, 67%, 78%)
CMYK	cmyk(67%, 41.5%, 0%, 21.6%)
CIE-LAB	lab(49.56, 9.94, -48.27)
CIE-LCH	lch(49.56, 49.28, 281.63°)
OKLab	oklab(56.81% -0.0251 -0.1377)
OKLCH	oklch(56.81% 0.14 259.7)
XYZ	xyz(19.0297, 18.0491, 57.1133)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275C8 #C89542

analogous

#42B8C8 #4275C8 #5242C8

triadic

#4275C8 #C84275 #75C842

tetradic

#4275C8 #C842B8 #C89542 #42C852

square

#4275C8 #C842B8 #C89542 #42C852

split-complementary

#4275C8 #C85242 #B8C842

monochromatic

#203E6F #2E599F #4275C8 #7198D6 #A1BAE4

Accessibility & contrast

On white

4.56

#4275C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#4275C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275C8

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275C8	#FFFFFF	#000000	##000000
##4275C8	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7DCB

Deuteranopia (green-blind)

#3970C6

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4275c8;
/* rgb */ color: rgb(66, 117, 200);
/* oklch */ color: oklch(56.8% 0.140 259.7);

Tailwind

colors: {
  custom: {
    50: '#849cd9',
    500: '#4275c8',
    950: '#000000',
  },
}

SCSS

$custom: #4275c8;
$custom-light: #849cd9;
$custom-dark: #000000;

JSON

{
  "hex": "#4275c8",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 200
  },
  "hsl": {
    "h": 217.164,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.56811,
    "c": 0.13995,
    "h": 259.7
  },
  "luminance": 0.18051
}

Semantic roles & 50–950 ramp

primary

#4275C8

secondary

#D0BA96

accent

#A64ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4275C8

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

Preview Lab → · Contrast checker → · Palette generator →