#21639C#21639C

#21639C is a mid, moderate cyan. Relative luminance 0.116; OKLCH L 48.7% C 0.113 H 248.7°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#21639C
RGB	rgb(33, 99, 156)
HSL	hsl(208, 65%, 37%)
HSV	hsv(208, 79%, 61%)
CMYK	cmyk(78.8%, 36.5%, 0%, 38.8%)
CIE-LAB	lab(40.65, 0.13, -36.82)
CIE-LCH	lch(40.65, 36.82, 270.21°)
OKLab	oklab(48.75% -0.0409 -0.1048)
OKLCH	oklch(48.75% 0.113 248.7)
XYZ	xyz(11.0875, 11.6460, 33.1096)
Luminance	0.1165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21639C #9C5A21

analogous

#219C98 #21639C #21269C

triadic

#21639C #9C2163 #639C21

tetradic

#21639C #98219C #9C5A21 #269C21

square

#21639C #98219C #9C5A21 #269C21

split-complementary

#21639C #9C2126 #9C9821

monochromatic

#0C2337 #164369 #21639C #2C83CF #5BA0DC

Accessibility & contrast

On white

6.31

#21639C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#21639C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21639C

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21639C	#FFFFFF	#000000	##FFFFFF
##21639C	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48669E

Deuteranopia (green-blind)

#365B9B

Tritanopia (blue-blind)

#007178

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #21639c;
/* rgb */ color: rgb(33, 99, 156);
/* oklch */ color: oklch(48.7% 0.113 248.7);

Tailwind

colors: {
  custom: {
    50: '#6f8fb9',
    500: '#21639c',
    950: '#000000',
  },
}

SCSS

$custom: #21639c;
$custom-light: #6f8fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21639c",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 156
  },
  "hsl": {
    "h": 207.805,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.48746,
    "c": 0.11254,
    "h": 248.7
  },
  "luminance": 0.11647
}

Semantic roles & 50–950 ramp

primary

#21639C

secondary

#C18958

accent

#8E40E8

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #21639C

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

Preview Lab → · Contrast checker → · Palette generator →