#2180BC#2180BC

#2180BC is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 57.6% C 0.125 H 242.4°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#2180BC
RGB	rgb(33, 128, 188)
HSL	hsl(203, 70%, 43%)
HSV	hsv(203, 82%, 74%)
CMYK	cmyk(82.4%, 31.9%, 0%, 26.3%)
CIE-LAB	lab(51.14, -5.39, -38.94)
CIE-LCH	lch(51.14, 39.31, 262.13°)
OKLab	oklab(57.57% -0.0579 -0.1106)
OKLCH	oklch(57.57% 0.125 242.4)
XYZ	xyz(17.4199, 19.3903, 50.3918)
Luminance	0.1939 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2180BC #BC5D21

analogous

#21BCAA #2180BC #2132BC

triadic

#2180BC #BC2180 #80BC21

tetradic

#2180BC #AA21BC #BC5D21 #32BC21

square

#2180BC #AA21BC #BC5D21 #32BC21

split-complementary

#2180BC #BC2132 #BCAA21

monochromatic

#0F3954 #185D88 #2180BC #3D9FDD #71B9E6

Accessibility & contrast

On white

4.30

#2180BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#2180BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2180BC

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2180BC	#FFFFFF	#000000	##000000
##2180BC	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BF

Deuteranopia (green-blind)

#4E74BB

Tritanopia (blue-blind)

#008F95

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #2180bc;
/* rgb */ color: rgb(33, 128, 188);
/* oklch */ color: oklch(57.6% 0.125 242.4);

Tailwind

colors: {
  custom: {
    50: '#77a4d0',
    500: '#2180bc',
    950: '#000000',
  },
}

SCSS

$custom: #2180bc;
$custom-light: #77a4d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2180bc",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 188
  },
  "hsl": {
    "h": 203.226,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.57566,
    "c": 0.12482,
    "h": 242.4
  },
  "luminance": 0.19393
}

Semantic roles & 50–950 ramp

primary

#2180BC

secondary

#CD916C

accent

#803BED

background

#F7FAFC

surface

#EEF4F9

border

#C9CED2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #2180BC

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

Preview Lab → · Contrast checker → · Palette generator →