#2187BC#2187BC

#2187BC is a mid, moderate cyan. Relative luminance 0.213; OKLCH L 59.2% C 0.120 H 237.5°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#2187BC
RGB	rgb(33, 135, 188)
HSL	hsl(201, 70%, 43%)
HSV	hsv(201, 82%, 74%)
CMYK	cmyk(82.4%, 28.2%, 0%, 26.3%)
CIE-LAB	lab(53.25, -9.45, -35.62)
CIE-LCH	lch(53.25, 36.85, 255.14°)
OKLab	oklab(59.24% -0.0642 -0.1008)
OKLCH	oklch(59.24% 0.12 237.5)
XYZ	xyz(18.3646, 21.2798, 50.7067)
Luminance	0.2128 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2187BC #BC5621

analogous

#21BCA3 #2187BC #2139BC

triadic

#2187BC #BC2187 #87BC21

tetradic

#2187BC #A321BC #BC5621 #39BC21

square

#2187BC #A321BC #BC5621 #39BC21

split-complementary

#2187BC #BC2139 #BCA321

monochromatic

#0F3C54 #186288 #2187BC #3DA6DD #71BEE6

Accessibility & contrast

On white

4.00

#2187BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#2187BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2187BC

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2187BC	#FFFFFF	#000000	##000000
##2187BC	1.00	4.00	5.26	5.26
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D87BE

Deuteranopia (green-blind)

#5979BB

Tritanopia (blue-blind)

#009599

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #2187bc;
/* rgb */ color: rgb(33, 135, 188);
/* oklch */ color: oklch(59.2% 0.120 237.5);

Tailwind

colors: {
  custom: {
    50: '#77a9d0',
    500: '#2187bc',
    950: '#000000',
  },
}

SCSS

$custom: #2187bc;
$custom-light: #77a9d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2187bc",
  "rgb": {
    "r": 33,
    "g": 135,
    "b": 188
  },
  "hsl": {
    "h": 200.516,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.59243,
    "c": 0.11952,
    "h": 237.5
  },
  "luminance": 0.21282
}

Semantic roles & 50–950 ramp

primary

#2187BC

secondary

#CD8D6C

accent

#783BED

background

#F7FAFC

surface

#EEF4F9

border

#C9CED2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #2187BC

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

Preview Lab → · Contrast checker → · Palette generator →