#4275BC#4275BC

#4275BC is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 56.1% C 0.124 H 257.0°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4275BC
RGB	rgb(66, 117, 188)
HSL	hsl(215, 48%, 50%)
HSV	hsv(215, 65%, 74%)
CMYK	cmyk(64.9%, 37.8%, 0%, 26.3%)
CIE-LAB	lab(48.90, 5.70, -42.43)
CIE-LCH	lch(48.90, 42.81, 277.66°)
OKLab	oklab(56.08% -0.0278 -0.1205)
OKLCH	oklch(56.08% 0.124 257)
XYZ	xyz(17.6819, 17.5100, 50.0151)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275BC #BC8942

analogous

#42B2BC #4275BC #4C42BC

triadic

#4275BC #BC4275 #75BC42

tetradic

#4275BC #BC42B2 #BC8942 #42BC4C

square

#4275BC #BC42B2 #BC8942 #42BC4C

split-complementary

#4275BC #BC4C42 #B2BC42

monochromatic

#223D61 #32598F #4275BC #6F96CC #9CB7DC

Accessibility & contrast

On white

4.66

#4275BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#4275BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4275BC

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275BC	#FFFFFF	#000000	##FFFFFF
##4275BC	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#567ABF

Deuteranopia (green-blind)

#446FBB

Tritanopia (blue-blind)

#00858F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4275bc;
/* rgb */ color: rgb(66, 117, 188);
/* oklch */ color: oklch(56.1% 0.124 257.0);

Tailwind

colors: {
  custom: {
    50: '#829cd0',
    500: '#4275bc',
    950: '#000000',
  },
}

SCSS

$custom: #4275bc;
$custom-light: #829cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4275bc",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 188
  },
  "hsl": {
    "h": 214.918,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56085,
    "c": 0.12371,
    "h": 257
  },
  "luminance": 0.17512
}

Semantic roles & 50–950 ramp

primary

#4275BC

secondary

#C9B191

accent

#9F50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4275BC

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

Preview Lab → · Contrast checker → · Palette generator →