#2870B1#2870B1

#2870B1 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.3% C 0.124 H 249.5°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#2870B1
RGB	rgb(40, 112, 177)
HSL	hsl(208, 63%, 43%)
HSV	hsv(208, 77%, 69%)
CMYK	cmyk(77.4%, 36.7%, 0%, 30.6%)
CIE-LAB	lab(45.92, 0.88, -40.82)
CIE-LCH	lch(45.92, 40.83, 271.23°)
OKLab	oklab(53.31% -0.0434 -0.1163)
OKLCH	oklch(53.31% 0.124 249.5)
XYZ	xyz(14.6020, 15.2121, 43.7531)
Luminance	0.1521 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2870B1 #B16928

analogous

#28B1AD #2870B1 #282BB1

triadic

#2870B1 #B12870 #70B128

tetradic

#2870B1 #AD28B1 #B16928 #2BB128

square

#2870B1 #AD28B1 #B16928 #2BB128

split-complementary

#2870B1 #B1282B #B1AD28

monochromatic

#11314D #1D507F #2870B1 #428FD4 #74ACE0

Accessibility & contrast

On white

5.19

#2870B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#2870B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2870B1

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2870B1	#FFFFFF	#000000	##FFFFFF
##2870B1	1.00	5.19	4.04	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5274B4

Deuteranopia (green-blind)

#3D67B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2870b1;
/* rgb */ color: rgb(40, 112, 177);
/* oklch */ color: oklch(53.3% 0.124 249.5);

Tailwind

colors: {
  custom: {
    50: '#7698c8',
    500: '#2870b1',
    950: '#000000',
  },
}

SCSS

$custom: #2870b1;
$custom-light: #7698c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2870b1",
  "rgb": {
    "r": 40,
    "g": 112,
    "b": 177
  },
  "hsl": {
    "h": 208.467,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.53314,
    "c": 0.1241,
    "h": 249.5
  },
  "luminance": 0.15214
}

Semantic roles & 50–950 ramp

primary

#2870B1

secondary

#C7986E

accent

#9042E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2870B1

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

Preview Lab → · Contrast checker → · Palette generator →