#21709B#21709B

#21709B is a mid, moderate cyan. Relative luminance 0.143; OKLCH L 51.9% C 0.100 H 237.6°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#21709B
RGB	rgb(33, 112, 155)
HSL	hsl(201, 65%, 37%)
HSV	hsv(201, 79%, 61%)
CMYK	cmyk(78.7%, 27.7%, 0%, 39.2%)
CIE-LAB	lab(44.63, -8.18, -29.96)
CIE-LCH	lch(44.63, 31.06, 254.74°)
OKLab	oklab(51.87% -0.0537 -0.0846)
OKLCH	oklch(51.87% 0.1 237.6)
XYZ	xyz(12.3354, 14.2767, 33.1096)
Luminance	0.1428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21709B #9B4C21

analogous

#219B89 #21709B #21339B

triadic

#21709B #9B2170 #709B21

tetradic

#21709B #89219B #9B4C21 #339B21

square

#21709B #89219B #9B4C21 #339B21

split-complementary

#21709B #9B2133 #9B8921

monochromatic

#0C2736 #164C69 #21709B #2C94CD #5AAEDC

Accessibility & contrast

On white

5.45

#21709B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#21709B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21709B

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21709B	#FFFFFF	#000000	##FFFFFF
##21709B	1.00	5.45	3.86	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B709D

Deuteranopia (green-blind)

#4B649A

Tritanopia (blue-blind)

#007B7F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21709b;
/* rgb */ color: rgb(33, 112, 155);
/* oklch */ color: oklch(51.9% 0.100 237.6);

Tailwind

colors: {
  custom: {
    50: '#7099b8',
    500: '#21709b',
    950: '#000000',
  },
}

SCSS

$custom: #21709b;
$custom-light: #7099b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21709b",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 155
  },
  "hsl": {
    "h": 201.148,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.51874,
    "c": 0.10024,
    "h": 237.6
  },
  "luminance": 0.14278
}

Semantic roles & 50–950 ramp

primary

#21709B

secondary

#C07C58

accent

#7B40E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090D11

muted

#7B7E80

Preview Lab

Preview with #21709B

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

Preview Lab → · Contrast checker → · Palette generator →