#2587B1#2587B1

#2587B1 is a mid, moderate cyan. Relative luminance 0.209; OKLCH L 58.8% C 0.107 H 231.8°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#2587B1
RGB	rgb(37, 135, 177)
HSL	hsl(198, 65%, 42%)
HSV	hsv(198, 79%, 69%)
CMYK	cmyk(79.1%, 23.7%, 0%, 30.6%)
CIE-LAB	lab(52.83, -13.01, -29.97)
CIE-LCH	lch(52.83, 32.67, 246.54°)
OKLab	oklab(58.77% -0.0664 -0.0844)
OKLCH	oklch(58.77% 0.107 231.8)
XYZ	xyz(17.3595, 20.8935, 44.7044)
Luminance	0.2090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2587B1 #B14F25

analogous

#25B195 #2587B1 #2541B1

triadic

#2587B1 #B12587 #87B125

tetradic

#2587B1 #9525B1 #B14F25 #41B125

square

#2587B1 #9525B1 #B14F25 #41B125

split-complementary

#2587B1 #B12541 #B19525

monochromatic

#103A4C #1A607E #2587B1 #3DA8D6 #6FBFE1

Accessibility & contrast

On white

4.05

#2587B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#2587B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2587B1

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2587B1	#FFFFFF	#000000	##000000
##2587B1	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7285B3

Deuteranopia (green-blind)

#5F78B0

Tritanopia (blue-blind)

#009295

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #2587b1;
/* rgb */ color: rgb(37, 135, 177);
/* oklch */ color: oklch(58.8% 0.107 231.8);

Tailwind

colors: {
  custom: {
    50: '#76aac8',
    500: '#2587b1',
    950: '#000000',
  },
}

SCSS

$custom: #2587b1;
$custom-light: #76aac8;
$custom-dark: #000000;

JSON

{
  "hex": "#2587b1",
  "rgb": {
    "r": 37,
    "g": 135,
    "b": 177
  },
  "hsl": {
    "h": 198,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.58765,
    "c": 0.10744,
    "h": 231.8
  },
  "luminance": 0.20896
}

Semantic roles & 50–950 ramp

primary

#2587B1

secondary

#C8866A

accent

#723FE8

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #2587B1

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

Preview Lab → · Contrast checker → · Palette generator →