#4281BC#4281BC

#4281BC is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.8% C 0.112 H 248.9°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#4281BC
RGB	rgb(66, 129, 188)
HSL	hsl(209, 48%, 50%)
HSV	hsv(209, 65%, 74%)
CMYK	cmyk(64.9%, 31.4%, 0%, 26.3%)
CIE-LAB	lab(52.38, -1.53, -36.92)
CIE-LCH	lch(52.38, 36.95, 267.62°)
OKLab	oklab(58.81% -0.0403 -0.1043)
OKLCH	oklch(58.81% 0.112 248.9)
XYZ	xyz(19.1708, 20.4877, 50.5114)
Luminance	0.2049 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4281BC #BC7D42

analogous

#42BCBA #4281BC #4244BC

triadic

#4281BC #BC4281 #81BC42

tetradic

#4281BC #BA42BC #BC7D42 #44BC42

square

#4281BC #BA42BC #BC7D42 #44BC42

split-complementary

#4281BC #BC4244 #BCBA42

monochromatic

#224361 #32628F #4281BC #6F9FCC #9CBDDC

Accessibility & contrast

On white

4.12

#4281BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#4281BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4281BC

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4281BC	#FFFFFF	#000000	##000000
##4281BC	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6783BF

Deuteranopia (green-blind)

#5778BB

Tritanopia (blue-blind)

#008F96

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #4281bc;
/* rgb */ color: rgb(66, 129, 188);
/* oklch */ color: oklch(58.8% 0.112 248.9);

Tailwind

colors: {
  custom: {
    50: '#82a5d0',
    500: '#4281bc',
    950: '#000000',
  },
}

SCSS

$custom: #4281bc;
$custom-light: #82a5d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4281bc",
  "rgb": {
    "r": 66,
    "g": 129,
    "b": 188
  },
  "hsl": {
    "h": 209.016,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.58814,
    "c": 0.11185,
    "h": 248.9
  },
  "luminance": 0.2049
}

Semantic roles & 50–950 ramp

primary

#4281BC

secondary

#C9AC91

accent

#9250D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4281BC

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

Preview Lab → · Contrast checker → · Palette generator →