#638ECB#638ECB

#638ECB is a light, moderate blue. Relative luminance 0.263; OKLCH L 64.1% C 0.104 H 257.2°. Best body text is #000000 at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#638ECB
RGB	rgb(99, 142, 203)
HSL	hsl(215, 50%, 59%)
HSV	hsv(215, 51%, 80%)
CMYK	cmyk(51.2%, 30%, 0%, 20.4%)
CIE-LAB	lab(58.33, 2.50, -36.01)
CIE-LCH	lch(58.33, 36.10, 273.96°)
OKLab	oklab(64.12% -0.023 -0.1011)
OKLCH	oklch(64.12% 0.104 257.2)
XYZ	xyz(25.5944, 26.3086, 60.2177)
Luminance	0.2631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638ECB #CBA063

analogous

#63C2CB #638ECB #6C63CB

triadic

#638ECB #CB638E #8ECB63

tetradic

#638ECB #CB63C2 #CBA063 #63CB6C

square

#638ECB #CB63C2 #CBA063 #63CB6C

split-complementary

#638ECB #CB6C63 #C2CB63

monochromatic

#2D5287 #3C6EB5 #638ECB #91AFDA #BFD0EA

Accessibility & contrast

On white

3.35

#638ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.26

#638ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638ECB

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638ECB	#FFFFFF	#000000	##000000
##638ECB	1.00	3.35	6.26	6.26
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.26	21.00	1.00	1.00
##000000	6.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CE

Deuteranopia (green-blind)

#6988CA

Tritanopia (blue-blind)

#309CA4

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638ecb;
/* rgb */ color: rgb(99, 142, 203);
/* oklch */ color: oklch(64.1% 0.104 257.2);

Tailwind

colors: {
  custom: {
    50: '#95aedb',
    500: '#638ecb',
    950: '#000000',
  },
}

SCSS

$custom: #638ecb;
$custom-light: #95aedb;
$custom-dark: #000000;

JSON

{
  "hex": "#638ecb",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 203
  },
  "hsl": {
    "h": 215.192,
    "s": 50,
    "l": 59.216
  },
  "oklch": {
    "l": 0.64118,
    "c": 0.10373,
    "h": 257.2
  },
  "luminance": 0.2631
}

Semantic roles & 50–950 ramp

primary

#638ECB

secondary

#D9C8B1

accent

#A04EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638ECB

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

Preview Lab → · Contrast checker → · Palette generator →