#21789B#21789B

#21789B is a mid, moderate cyan. Relative luminance 0.161; OKLCH L 53.9% C 0.096 H 230.0°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#21789B
RGB	rgb(33, 120, 155)
HSL	hsl(197, 65%, 37%)
HSV	hsv(197, 79%, 61%)
CMYK	cmyk(78.7%, 22.6%, 0%, 39.2%)
CIE-LAB	lab(47.13, -12.82, -26.06)
CIE-LCH	lch(47.13, 29.04, 243.80°)
OKLab	oklab(53.87% -0.0616 -0.0733)
OKLCH	oklch(53.87% 0.096 230)
XYZ	xyz(13.2577, 16.1212, 33.4170)
Luminance	0.1612 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21789B #9B4421

analogous

#219B81 #21789B #213B9B

triadic

#21789B #9B2178 #789B21

tetradic

#21789B #81219B #9B4421 #3B9B21

square

#21789B #81219B #9B4421 #3B9B21

split-complementary

#21789B #9B213B #9B8121

monochromatic

#0C2A36 #165169 #21789B #2C9FCD #5AB7DC

Accessibility & contrast

On white

4.97

#21789B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#21789B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21789B

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21789B	#FFFFFF	#000000	##FFFFFF
##21789B	1.00	4.97	4.22	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66769D

Deuteranopia (green-blind)

#566B9B

Tritanopia (blue-blind)

#008284

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #21789b;
/* rgb */ color: rgb(33, 120, 155);
/* oklch */ color: oklch(53.9% 0.096 230.0);

Tailwind

colors: {
  custom: {
    50: '#709fb8',
    500: '#21789b',
    950: '#000000',
  },
}

SCSS

$custom: #21789b;
$custom-light: #709fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#21789b",
  "rgb": {
    "r": 33,
    "g": 120,
    "b": 155
  },
  "hsl": {
    "h": 197.213,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.53871,
    "c": 0.09573,
    "h": 230
  },
  "luminance": 0.16123
}

Semantic roles & 50–950 ramp

primary

#21789B

secondary

#C07658

accent

#7040E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #21789B

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

Preview Lab → · Contrast checker → · Palette generator →