#63A5E9#63A5E9

#63A5E9 is a light, vivid cyan. Relative luminance 0.354; OKLCH L 70.6% C 0.121 H 250.6°. Best body text is #000000 at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#63A5E9
RGB	rgb(99, 165, 233)
HSL	hsl(210, 75%, 65%)
HSV	hsv(210, 58%, 91%)
CMYK	cmyk(57.5%, 29.2%, 0%, 8.6%)
CIE-LAB	lab(66.09, -1.35, -40.54)
CIE-LCH	lch(66.09, 40.57, 268.09°)
OKLab	oklab(70.64% -0.0403 -0.1141)
OKLCH	oklch(70.64% 0.121 250.6)
XYZ	xyz(33.3034, 35.4432, 82.1612)
Luminance	0.3545 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A5E9 #E9A763

analogous

#63E8E9 #63A5E9 #6463E9

triadic

#63A5E9 #E963A5 #A5E963

tetradic

#63A5E9 #E963E8 #E9A763 #63E964

square

#63A5E9 #E963E8 #E9A763 #63E964

split-complementary

#63A5E9 #E96463 #E8E963

monochromatic

#1A68B8 #2D86E1 #63A5E9 #99C4F1 #CEE3F8

Accessibility & contrast

On white

2.60

#63A5E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.09

#63A5E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A5E9

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A5E9	#FFFFFF	#000000	##000000
##63A5E9	1.00	2.60	8.09	8.09
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.09	21.00	1.00	1.00
##000000	8.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A8EC

Deuteranopia (green-blind)

#779BE8

Tritanopia (blue-blind)

#00B5BD

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #63a5e9;
/* rgb */ color: rgb(99, 165, 233);
/* oklch */ color: oklch(70.6% 0.121 250.6);

Tailwind

colors: {
  custom: {
    50: '#99bff0',
    500: '#63a5e9',
    950: '#000000',
  },
}

SCSS

$custom: #63a5e9;
$custom-light: #99bff0;
$custom-dark: #000000;

JSON

{
  "hex": "#63a5e9",
  "rgb": {
    "r": 99,
    "g": 165,
    "b": 233
  },
  "hsl": {
    "h": 210.448,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.70641,
    "c": 0.12104,
    "h": 250.6
  },
  "luminance": 0.35446
}

Semantic roles & 50–950 ramp

primary

#63A5E9

secondary

#EBD4BD

accent

#740ED7

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63A5E9

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

Preview Lab → · Contrast checker → · Palette generator →