#21689B#21689B

#21689B is a mid, moderate cyan. Relative luminance 0.126; OKLCH L 49.9% C 0.107 H 244.5°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#21689B
RGB	rgb(33, 104, 155)
HSL	hsl(205, 65%, 37%)
HSV	hsv(205, 79%, 61%)
CMYK	cmyk(78.7%, 32.9%, 0%, 39.2%)
CIE-LAB	lab(42.14, -3.35, -33.87)
CIE-LCH	lch(42.14, 34.04, 264.35°)
OKLab	oklab(49.9% -0.0459 -0.0961)
OKLCH	oklch(49.9% 0.107 244.5)
XYZ	xyz(11.4916, 12.5891, 32.8283)
Luminance	0.1259 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21689B #9B5421

analogous

#219B91 #21689B #212B9B

triadic

#21689B #9B2168 #689B21

tetradic

#21689B #91219B #9B5421 #2B9B21

square

#21689B #91219B #9B5421 #2B9B21

split-complementary

#21689B #9B212B #9B9121

monochromatic

#0C2436 #164669 #21689B #2C8ACD #5AA6DC

Accessibility & contrast

On white

5.97

#21689B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#21689B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21689B

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21689B	#FFFFFF	#000000	##FFFFFF
##21689B	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#506A9D

Deuteranopia (green-blind)

#3F5E9A

Tritanopia (blue-blind)

#00747A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #21689b;
/* rgb */ color: rgb(33, 104, 155);
/* oklch */ color: oklch(49.9% 0.107 244.5);

Tailwind

colors: {
  custom: {
    50: '#6f92b9',
    500: '#21689b',
    950: '#000000',
  },
}

SCSS

$custom: #21689b;
$custom-light: #6f92b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21689b",
  "rgb": {
    "r": 33,
    "g": 104,
    "b": 155
  },
  "hsl": {
    "h": 205.082,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.49902,
    "c": 0.10655,
    "h": 244.5
  },
  "luminance": 0.12591
}

Semantic roles & 50–950 ramp

primary

#21689B

secondary

#C08358

accent

#8640E8

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080D11

muted

#7B7D80

Preview Lab

Preview with #21689B

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

Preview Lab → · Contrast checker → · Palette generator →