#21637E#21637E

#21637E is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.1% C 0.078 H 229.2°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#21637E
RGB	rgb(33, 99, 126)
HSL	hsl(197, 58%, 31%)
HSV	hsv(197, 74%, 49%)
CMYK	cmyk(73.8%, 21.4%, 0%, 50.6%)
CIE-LAB	lab(39.16, -11.11, -21.08)
CIE-LCH	lch(39.16, 23.82, 242.21°)
OKLab	oklab(47.08% -0.051 -0.0591)
OKLCH	oklch(47.08% 0.078 229.2)
XYZ	xyz(8.8534, 10.7524, 21.3434)
Luminance	0.1075 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21637E #7E3C21

analogous

#217E6A #21637E #21347E

triadic

#21637E #7E2163 #637E21

tetradic

#21637E #6A217E #7E3C21 #347E21

square

#21637E #6A217E #7E3C21 #347E21

split-complementary

#21637E #7E2134 #7E6A21

monochromatic

#08171D #143D4E #21637E #2E89AE #4AA9D0

Accessibility & contrast

On white

6.67

#21637E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#21637E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21637E

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21637E	#FFFFFF	#000000	##FFFFFF
##21637E	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617F

Deuteranopia (green-blind)

#48587E

Tritanopia (blue-blind)

#006B6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #21637e;
/* rgb */ color: rgb(33, 99, 126);
/* oklch */ color: oklch(47.1% 0.078 229.2);

Tailwind

colors: {
  custom: {
    50: '#6a8fa3',
    500: '#21637e',
    950: '#000000',
  },
}

SCSS

$custom: #21637e;
$custom-light: #6a8fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#21637e",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 126
  },
  "hsl": {
    "h": 197.419,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4708,
    "c": 0.07809,
    "h": 229.2
  },
  "luminance": 0.10753
}

Semantic roles & 50–950 ramp

primary

#21637E

secondary

#B1684A

accent

#7346E2

background

#F6F8FA

surface

#ECF0F3

border

#C7CBCD

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #21637E

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

Preview Lab → · Contrast checker → · Palette generator →