#4275CD#4275CD

#4275CD is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.1% C 0.147 H 260.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4275CD
RGB	rgb(66, 117, 205)
HSL	hsl(218, 58%, 53%)
HSV	hsv(218, 68%, 80%)
CMYK	cmyk(67.8%, 42.9%, 0%, 19.6%)
CIE-LAB	lab(49.84, 11.72, -50.67)
CIE-LCH	lch(49.84, 52.00, 283.02°)
OKLab	oklab(57.13% -0.0241 -0.1447)
OKLCH	oklch(57.13% 0.147 260.5)
XYZ	xyz(19.6236, 18.2866, 60.2413)
Luminance	0.1829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275CD #CD9A42

analogous

#42BACD #4275CD #5442CD

triadic

#4275CD #CD4275 #75CD42

tetradic

#4275CD #CD42BA #CD9A42 #42CD54

square

#4275CD #CD42BA #CD9A42 #42CD54

split-complementary

#4275CD #CD5442 #BACD42

monochromatic

#1F3F76 #2C59A6 #4275CD #7298DA #A3BCE7

Accessibility & contrast

On white

4.51

#4275CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#4275CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275CD

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275CD	#FFFFFF	#000000	##000000
##4275CD	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7DD0

Deuteranopia (green-blind)

#3471CB

Tritanopia (blue-blind)

#008997

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4275cd;
/* rgb */ color: rgb(66, 117, 205);
/* oklch */ color: oklch(57.1% 0.147 260.5);

Tailwind

colors: {
  custom: {
    50: '#859cdd',
    500: '#4275cd',
    950: '#000000',
  },
}

SCSS

$custom: #4275cd;
$custom-light: #859cdd;
$custom-dark: #000000;

JSON

{
  "hex": "#4275cd",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 205
  },
  "hsl": {
    "h": 217.986,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.57126,
    "c": 0.14671,
    "h": 260.5
  },
  "luminance": 0.18289
}

Semantic roles & 50–950 ramp

primary

#4275CD

secondary

#D3BD97

accent

#A946E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4275CD

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

Preview Lab → · Contrast checker → · Palette generator →