#638DCC#638DCC

#638DCC is a light, moderate blue. Relative luminance 0.261; OKLCH L 63.9% C 0.106 H 258.3°. Best body text is #000000 at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#638DCC
RGB	rgb(99, 141, 204)
HSL	hsl(216, 51%, 59%)
HSV	hsv(216, 51%, 80%)
CMYK	cmyk(51.5%, 30.9%, 0%, 20%)
CIE-LAB	lab(58.09, 3.39, -36.94)
CIE-LCH	lch(58.09, 37.10, 275.24°)
OKLab	oklab(63.95% -0.0215 -0.1038)
OKLCH	oklch(63.95% 0.106 258.3)
XYZ	xyz(25.5658, 26.0602, 60.7979)
Luminance	0.2606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DCC #CCA263

analogous

#63C2CC #638DCC #6E63CC

triadic

#638DCC #CC638D #8DCC63

tetradic

#638DCC #CC63C2 #CCA263 #63CC6E

square

#638DCC #CC63C2 #CCA263 #63CC6E

split-complementary

#638DCC #CC6E63 #C2CC63

monochromatic

#2C5188 #3C6DB6 #638DCC #91AFDB #BFD0EA

Accessibility & contrast

On white

3.38

#638DCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.21

#638DCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DCC

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DCC	#FFFFFF	#000000	##000000
##638DCC	1.00	3.38	6.21	6.21
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.21	21.00	1.00	1.00
##000000	6.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7491CF

Deuteranopia (green-blind)

#6887CB

Tritanopia (blue-blind)

#2F9BA3

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638dcc;
/* rgb */ color: rgb(99, 141, 204);
/* oklch */ color: oklch(63.9% 0.106 258.3);

Tailwind

colors: {
  custom: {
    50: '#95aedc',
    500: '#638dcc',
    950: '#000000',
  },
}

SCSS

$custom: #638dcc;
$custom-light: #95aedc;
$custom-dark: #000000;

JSON

{
  "hex": "#638dcc",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 204
  },
  "hsl": {
    "h": 216,
    "s": 50.725,
    "l": 59.412
  },
  "oklch": {
    "l": 0.63949,
    "c": 0.10606,
    "h": 258.3
  },
  "luminance": 0.26062
}

Semantic roles & 50–950 ramp

primary

#638DCC

secondary

#DAC9B1

accent

#A24EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638DCC

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

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