#21708F#21708F

#21708F is a mid, moderate cyan. Relative luminance 0.139; OKLCH L 51.3% C 0.088 H 228.9°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#21708F
RGB	rgb(33, 112, 143)
HSL	hsl(197, 63%, 35%)
HSV	hsv(197, 77%, 56%)
CMYK	cmyk(76.9%, 21.7%, 0%, 43.9%)
CIE-LAB	lab(44.08, -12.55, -23.69)
CIE-LCH	lch(44.08, 26.81, 242.09°)
OKLab	oklab(51.26% -0.0581 -0.0665)
OKLCH	oklch(51.26% 0.088 228.9)
XYZ	xyz(11.3773, 13.8935, 28.0634)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21708F #8F4021

analogous

#218F77 #21708F #21398F

triadic

#21708F #8F2170 #708F21

tetradic

#21708F #77218F #8F4021 #398F21

square

#21708F #77218F #8F4021 #398F21

split-complementary

#21708F #8F2139 #8F7721

monochromatic

#0A222C #16495D #21708F #2C97C1 #53B2D7

Accessibility & contrast

On white

5.56

#21708F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#21708F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21708F

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21708F	#FFFFFF	#000000	##FFFFFF
##21708F	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#606E91

Deuteranopia (green-blind)

#51648F

Tritanopia (blue-blind)

#00797A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #21708f;
/* rgb */ color: rgb(33, 112, 143);
/* oklch */ color: oklch(51.3% 0.088 228.9);

Tailwind

colors: {
  custom: {
    50: '#6e99b0',
    500: '#21708f',
    950: '#000000',
  },
}

SCSS

$custom: #21708f;
$custom-light: #6e99b0;
$custom-dark: #000000;

JSON

{
  "hex": "#21708f",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 143
  },
  "hsl": {
    "h": 196.909,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.51257,
    "c": 0.08832,
    "h": 228.9
  },
  "luminance": 0.13895
}

Semantic roles & 50–950 ramp

primary

#21708F

secondary

#BB6F51

accent

#7042E6

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #21708F

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

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