#4299DA#4299DA

#4299DA is a light, vivid cyan. Relative luminance 0.290; OKLCH L 65.9% C 0.128 H 244.2°. Best body text is #000000 at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#4299DA
RGB	rgb(66, 153, 218)
HSL	hsl(206, 67%, 56%)
HSV	hsv(206, 70%, 85%)
CMYK	cmyk(69.7%, 29.8%, 0%, 14.5%)
CIE-LAB	lab(60.78, -5.19, -40.67)
CIE-LCH	lch(60.78, 40.99, 262.73°)
OKLab	oklab(65.9% -0.0555 -0.115)
OKLCH	oklch(65.9% 0.128 244.2)
XYZ	xyz(26.2881, 28.9998, 70.5282)
Luminance	0.2900 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4299DA #DA8342

analogous

#42DACF #4299DA #424DDA

triadic

#4299DA #DA4299 #99DA42

tetradic

#4299DA #CF42DA #DA8342 #4DDA42

square

#4299DA #CF42DA #DA8342 #4DDA42

split-complementary

#4299DA #DA424D #DACF42

monochromatic

#1A5987 #247ABA #4299DA #75B5E4 #A8D0EE

Accessibility & contrast

On white

3.09

#4299DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.80

#4299DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4299DA

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4299DA	#FFFFFF	#000000	##000000
##4299DA	1.00	3.09	6.80	6.80
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.80	21.00	1.00	1.00
##000000	6.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C9BDD

Deuteranopia (green-blind)

#678CD9

Tritanopia (blue-blind)

#00A9B0

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #4299da;
/* rgb */ color: rgb(66, 153, 218);
/* oklch */ color: oklch(65.9% 0.128 244.2);

Tailwind

colors: {
  custom: {
    50: '#88b6e5',
    500: '#4299da',
    950: '#000000',
  },
}

SCSS

$custom: #4299da;
$custom-light: #88b6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4299da",
  "rgb": {
    "r": 66,
    "g": 153,
    "b": 218
  },
  "hsl": {
    "h": 205.658,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.65895,
    "c": 0.12769,
    "h": 244.2
  },
  "luminance": 0.29003
}

Semantic roles & 50–950 ramp

primary

#4299DA

secondary

#DBB79C

accent

#873EEA

background

#F9FBFE

surface

#F1F6FC

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #4299DA

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

Preview Lab → · Contrast checker → · Palette generator →