#21789C#21789C

#21789C is a mid, moderate cyan. Relative luminance 0.162; OKLCH L 53.9% C 0.097 H 230.7°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#21789C
RGB	rgb(33, 120, 156)
HSL	hsl(198, 65%, 37%)
HSV	hsv(198, 79%, 61%)
CMYK	cmyk(78.8%, 23.1%, 0%, 38.8%)
CIE-LAB	lab(47.18, -12.46, -26.58)
CIE-LCH	lch(47.18, 29.35, 244.88°)
OKLab	oklab(53.92% -0.0612 -0.0748)
OKLCH	oklch(53.92% 0.097 230.7)
XYZ	xyz(13.3420, 16.1550, 33.8611)
Luminance	0.1616 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21789C #9C4521

analogous

#219C83 #21789C #213B9C

triadic

#21789C #9C2178 #789C21

tetradic

#21789C #83219C #9C4521 #3B9C21

square

#21789C #83219C #9C4521 #3B9C21

split-complementary

#21789C #9C213B #9C8321

monochromatic

#0C2A37 #165169 #21789C #2C9FCF #5BB6DC

Accessibility & contrast

On white

4.96

#21789C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#21789C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21789C

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21789C	#FFFFFF	#000000	##FFFFFF
##21789C	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66769E

Deuteranopia (green-blind)

#556B9B

Tritanopia (blue-blind)

#008284

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #21789c;
/* rgb */ color: rgb(33, 120, 156);
/* oklch */ color: oklch(53.9% 0.097 230.7);

Tailwind

colors: {
  custom: {
    50: '#709fb9',
    500: '#21789c',
    950: '#000000',
  },
}

SCSS

$custom: #21789c;
$custom-light: #709fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21789c",
  "rgb": {
    "r": 33,
    "g": 120,
    "b": 156
  },
  "hsl": {
    "h": 197.561,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.53921,
    "c": 0.09664,
    "h": 230.7
  },
  "luminance": 0.16157
}

Semantic roles & 50–950 ramp

primary

#21789C

secondary

#C17758

accent

#7140E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #21789C

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

Preview Lab → · Contrast checker → · Palette generator →