#2591A9#2591A9

#2591A9 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 60.9% C 0.099 H 216.7°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#2591A9
RGB	rgb(37, 145, 169)
HSL	hsl(191, 64%, 40%)
HSV	hsv(191, 78%, 66%)
CMYK	cmyk(78.1%, 14.2%, 0%, 33.7%)
CIE-LAB	lab(55.59, -21.20, -21.13)
CIE-LCH	lch(55.59, 29.93, 224.90°)
OKLab	oklab(60.87% -0.0793 -0.059)
OKLCH	oklch(60.87% 0.099 216.7)
XYZ	xyz(18.0467, 23.5065, 41.1145)
Luminance	0.2351 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2591A9 #A93D25

analogous

#25A97F #2591A9 #254FA9

triadic

#2591A9 #A92591 #91A925

tetradic

#2591A9 #7F25A9 #A93D25 #4FA925

square

#2591A9 #7F25A9 #A93D25 #4FA925

split-complementary

#2591A9 #A9254F #A97F25

monochromatic

#0F3B45 #1A6677 #2591A9 #38B7D3 #6AC9DE

Accessibility & contrast

On white

3.68

#2591A9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.70

#2591A9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2591A9

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2591A9	#FFFFFF	#000000	##000000
##2591A9	1.00	3.68	5.70	5.70
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.70	21.00	1.00	1.00
##000000	5.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818CAA

Deuteranopia (green-blind)

#6F80A9

Tritanopia (blue-blind)

#009999

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #2591a9;
/* rgb */ color: rgb(37, 145, 169);
/* oklch */ color: oklch(60.9% 0.099 216.7);

Tailwind

colors: {
  custom: {
    50: '#76b1c2',
    500: '#2591a9',
    950: '#000000',
  },
}

SCSS

$custom: #2591a9;
$custom-light: #76b1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2591a9",
  "rgb": {
    "r": 37,
    "g": 145,
    "b": 169
  },
  "hsl": {
    "h": 190.909,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.60868,
    "c": 0.09884,
    "h": 216.7
  },
  "luminance": 0.23509
}

Semantic roles & 50–950 ramp

primary

#2591A9

secondary

#C47765

accent

#5F41E7

background

#F7FAFB

surface

#EEF5F7

border

#C9CFD0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #2591A9

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

Preview Lab → · Contrast checker → · Palette generator →