#21739E#21739E

#21739E is a mid, moderate cyan. Relative luminance 0.151; OKLCH L 52.8% C 0.101 H 236.8°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#21739E
RGB	rgb(33, 115, 158)
HSL	hsl(201, 65%, 37%)
HSV	hsv(201, 79%, 62%)
CMYK	cmyk(79.1%, 27.2%, 0%, 38%)
CIE-LAB	lab(45.71, -8.84, -30.05)
CIE-LCH	lch(45.71, 31.32, 253.61°)
OKLab	oklab(52.78% -0.0556 -0.0849)
OKLCH	oklch(52.78% 0.101 236.8)
XYZ	xyz(12.9270, 15.0519, 34.5651)
Luminance	0.1505 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21739E #9E4C21

analogous

#219E8B #21739E #21359E

triadic

#21739E #9E2173 #739E21

tetradic

#21739E #8B219E #9E4C21 #359E21

square

#21739E #8B219E #9E4C21 #359E21

split-complementary

#21739E #9E2135 #9E8B21

monochromatic

#0C2939 #164E6B #21739E #2C98D1 #5CB1DD

Accessibility & contrast

On white

5.24

#21739E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#21739E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21739E

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21739E	#FFFFFF	#000000	##FFFFFF
##21739E	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E73A0

Deuteranopia (green-blind)

#4D679D

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21739e;
/* rgb */ color: rgb(33, 115, 158);
/* oklch */ color: oklch(52.8% 0.101 236.8);

Tailwind

colors: {
  custom: {
    50: '#709bbb',
    500: '#21739e',
    950: '#000000',
  },
}

SCSS

$custom: #21739e;
$custom-light: #709bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#21739e",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 158
  },
  "hsl": {
    "h": 200.64,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.52777,
    "c": 0.10144,
    "h": 236.8
  },
  "luminance": 0.15053
}

Semantic roles & 50–950 ramp

primary

#21739E

secondary

#C17D59

accent

#7A3FE8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #21739E

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

Preview Lab → · Contrast checker → · Palette generator →