#2181BD#2181BD

#2181BD is a mid, vivid cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.125 H 242.1°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#2181BD
RGB	rgb(33, 129, 189)
HSL	hsl(203, 70%, 44%)
HSV	hsv(203, 83%, 74%)
CMYK	cmyk(82.5%, 31.7%, 0%, 25.9%)
CIE-LAB	lab(51.49, -5.60, -38.96)
CIE-LCH	lch(51.49, 39.36, 261.82°)
OKLab	oklab(57.86% -0.0585 -0.1106)
OKLCH	oklch(57.86% 0.125 242.1)
XYZ	xyz(17.6591, 19.6958, 51.0052)
Luminance	0.1970 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181BD #BD5D21

analogous

#21BDAB #2181BD #2133BD

triadic

#2181BD #BD2181 #81BD21

tetradic

#2181BD #AB21BD #BD5D21 #33BD21

square

#2181BD #AB21BD #BD5D21 #33BD21

split-complementary

#2181BD #BD2133 #BDAB21

monochromatic

#0F3A55 #185D89 #2181BD #3EA0DD #72BAE6

Accessibility & contrast

On white

4.25

#2181BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#2181BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181BD

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181BD	#FFFFFF	#000000	##000000
##2181BD	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582C0

Deuteranopia (green-blind)

#4F74BC

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #2181bd;
/* rgb */ color: rgb(33, 129, 189);
/* oklch */ color: oklch(57.9% 0.125 242.1);

Tailwind

colors: {
  custom: {
    50: '#77a5d1',
    500: '#2181bd',
    950: '#000000',
  },
}

SCSS

$custom: #2181bd;
$custom-light: #77a5d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2181bd",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 189
  },
  "hsl": {
    "h": 203.077,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.5786,
    "c": 0.12513,
    "h": 242.1
  },
  "luminance": 0.19698
}

Semantic roles & 50–950 ramp

primary

#2181BD

secondary

#CD926D

accent

#7F3BED

background

#F7FAFC

surface

#EEF4F9

border

#C9CED2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #2181BD

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

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