#21688B#21688B

#21688B is a mid, moderate cyan. Relative luminance 0.121; OKLCH L 49.0% C 0.088 H 234.5°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#21688B
RGB	rgb(33, 104, 139)
HSL	hsl(200, 62%, 34%)
HSV	hsv(200, 76%, 55%)
CMYK	cmyk(76.3%, 25.2%, 0%, 45.5%)
CIE-LAB	lab(41.35, -9.33, -25.53)
CIE-LCH	lch(41.35, 27.19, 249.93°)
OKLab	oklab(49.02% -0.0513 -0.0719)
OKLCH	oklch(49.02% 0.088 234.5)
XYZ	xyz(10.2359, 12.0868, 26.2146)
Luminance	0.1209 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21688B #8B4421

analogous

#218B79 #21688B #21338B

triadic

#21688B #8B2168 #688B21

tetradic

#21688B #79218B #8B4421 #338B21

square

#21688B #79218B #8B4421 #338B21

split-complementary

#21688B #8B2133 #8B7921

monochromatic

#0A1E28 #15435A #21688B #2D8DBC #51AAD6

Accessibility & contrast

On white

6.14

#21688B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#21688B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21688B

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21688B	#FFFFFF	#000000	##FFFFFF
##21688B	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57678D

Deuteranopia (green-blind)

#495D8A

Tritanopia (blue-blind)

#007174

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #21688b;
/* rgb */ color: rgb(33, 104, 139);
/* oklch */ color: oklch(49.0% 0.088 234.5);

Tailwind

colors: {
  custom: {
    50: '#6c93ad',
    500: '#21688b',
    950: '#000000',
  },
}

SCSS

$custom: #21688b;
$custom-light: #6c93ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21688b",
  "rgb": {
    "r": 33,
    "g": 104,
    "b": 139
  },
  "hsl": {
    "h": 199.811,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.49023,
    "c": 0.08837,
    "h": 234.5
  },
  "luminance": 0.12088
}

Semantic roles & 50–950 ramp

primary

#21688B

secondary

#B9724F

accent

#7843E5

background

#F7F9FA

surface

#EDF1F4

border

#C8CBCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #21688B

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

Preview Lab → · Contrast checker → · Palette generator →