#4283BF#4283BF

#4283BF is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 59.4% C 0.114 H 248.6°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#4283BF
RGB	rgb(66, 131, 191)
HSL	hsl(209, 49%, 50%)
HSV	hsv(209, 65%, 75%)
CMYK	cmyk(65.4%, 31.4%, 0%, 25.1%)
CIE-LAB	lab(53.11, -1.69, -37.49)
CIE-LCH	lch(53.11, 37.53, 267.43°)
OKLab	oklab(59.44% -0.0415 -0.106)
OKLCH	oklch(59.44% 0.114 248.6)
XYZ	xyz(19.7635, 21.1504, 52.3210)
Luminance	0.2115 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283BF #BF7E42

analogous

#42BFBC #4283BF #4244BF

triadic

#4283BF #BF4283 #83BF42

tetradic

#4283BF #BC42BF #BF7E42 #44BF42

square

#4283BF #BC42BF #BF7E42 #44BF42

split-complementary

#4283BF #BF4244 #BFBC42

monochromatic

#224565 #326492 #4283BF #70A1CE #9DBFDE

Accessibility & contrast

On white

4.01

#4283BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#4283BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283BF

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283BF	#FFFFFF	#000000	##000000
##4283BF	1.00	4.01	5.23	5.23
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6985C2

Deuteranopia (green-blind)

#5879BE

Tritanopia (blue-blind)

#009198

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #4283bf;
/* rgb */ color: rgb(66, 131, 191);
/* oklch */ color: oklch(59.4% 0.114 248.6);

Tailwind

colors: {
  custom: {
    50: '#83a6d2',
    500: '#4283bf',
    950: '#000000',
  },
}

SCSS

$custom: #4283bf;
$custom-light: #83a6d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4283bf",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 191
  },
  "hsl": {
    "h": 208.8,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.59435,
    "c": 0.11381,
    "h": 248.6
  },
  "luminance": 0.21152
}

Semantic roles & 50–950 ramp

primary

#4283BF

secondary

#CAAD93

accent

#914FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4283BF

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

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