#4290C3#4290C3

#4290C3 is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.7% C 0.109 H 240.3°. Best body text is #000000 at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4290C3
RGB	rgb(66, 144, 195)
HSL	hsl(204, 52%, 51%)
HSV	hsv(204, 66%, 76%)
CMYK	cmyk(66.2%, 26.2%, 0%, 23.5%)
CIE-LAB	lab(57.12, -7.85, -33.50)
CIE-LCH	lch(57.12, 34.41, 256.80°)
OKLab	oklab(62.66% -0.0537 -0.0943)
OKLCH	oklch(62.66% 0.109 240.3)
XYZ	xyz(22.0666, 25.0426, 55.2899)
Luminance	0.2505 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290C3 #C37542

analogous

#42C3B5 #4290C3 #424FC3

triadic

#4290C3 #C34290 #90C342

tetradic

#4290C3 #B542C3 #C37542 #4FC342

square

#4290C3 #B542C3 #C37542 #4FC342

split-complementary

#4290C3 #C3424F #C3B542

monochromatic

#214D69 #306F98 #4290C3 #70ABD2 #9FC7E0

Accessibility & contrast

On white

3.49

#4290C3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.01

#4290C3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290C3

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290C3	#FFFFFF	#000000	##000000
##4290C3	1.00	3.49	6.01	6.01
#FFFFFF	3.49	1.00	21.00	21.00
#000000	6.01	21.00	1.00	1.00
##000000	6.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7990C5

Deuteranopia (green-blind)

#6783C2

Tritanopia (blue-blind)

#009DA2

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #4290c3;
/* rgb */ color: rgb(66, 144, 195);
/* oklch */ color: oklch(62.7% 0.109 240.3);

Tailwind

colors: {
  custom: {
    50: '#84b0d5',
    500: '#4290c3',
    950: '#000000',
  },
}

SCSS

$custom: #4290c3;
$custom-light: #84b0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#4290c3",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 195
  },
  "hsl": {
    "h": 203.721,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.62656,
    "c": 0.10852,
    "h": 240.3
  },
  "luminance": 0.25045
}

Semantic roles & 50–950 ramp

primary

#4290C3

secondary

#CDAA94

accent

#854DDB

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #4290C3

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

Preview Lab → · Contrast checker → · Palette generator →