#2591A8#2591A8

#2591A8 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 60.8% C 0.098 H 215.8°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#2591A8
RGB	rgb(37, 145, 168)
HSL	hsl(191, 64%, 40%)
HSV	hsv(191, 78%, 66%)
CMYK	cmyk(78%, 13.7%, 0%, 34.1%)
CIE-LAB	lab(55.55, -21.53, -20.61)
CIE-LCH	lch(55.55, 29.81, 223.75°)
OKLab	oklab(60.83% -0.0797 -0.0575)
OKLCH	oklch(60.83% 0.098 215.8)
XYZ	xyz(17.9532, 23.4691, 40.6220)
Luminance	0.2347 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2591A8 #A83C25

analogous

#25A87D #2591A8 #2550A8

triadic

#2591A8 #A82591 #91A825

tetradic

#2591A8 #7D25A8 #A83C25 #50A825

square

#2591A8 #7D25A8 #A83C25 #50A825

split-complementary

#2591A8 #A82550 #A87D25

monochromatic

#0F3A44 #1A6676 #2591A8 #37B8D3 #69CADE

Accessibility & contrast

On white

3.69

#2591A8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#2591A8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2591A8

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2591A8	#FFFFFF	#000000	##000000
##2591A8	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818CA9

Deuteranopia (green-blind)

#7080A8

Tritanopia (blue-blind)

#009998

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #2591a8;
/* rgb */ color: rgb(37, 145, 168);
/* oklch */ color: oklch(60.8% 0.098 215.8);

Tailwind

colors: {
  custom: {
    50: '#75b1c2',
    500: '#2591a8',
    950: '#000000',
  },
}

SCSS

$custom: #2591a8;
$custom-light: #75b1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2591a8",
  "rgb": {
    "r": 37,
    "g": 145,
    "b": 168
  },
  "hsl": {
    "h": 190.534,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.60825,
    "c": 0.09831,
    "h": 215.8
  },
  "luminance": 0.23471
}

Semantic roles & 50–950 ramp

primary

#2591A8

secondary

#C47565

accent

#5E41E7

background

#F7FAFB

surface

#EEF5F7

border

#C9CFD0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #2591A8

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

Preview Lab → · Contrast checker → · Palette generator →