#2591AA#2591AA

#2591AA is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 60.9% C 0.099 H 217.5°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#2591AA
RGB	rgb(37, 145, 170)
HSL	hsl(191, 64%, 41%)
HSV	hsv(191, 78%, 67%)
CMYK	cmyk(78.2%, 14.7%, 0%, 33.3%)
CIE-LAB	lab(55.63, -20.86, -21.64)
CIE-LCH	lch(55.63, 30.06, 226.05°)
OKLab	oklab(60.91% -0.0789 -0.0605)
OKLCH	oklch(60.91% 0.099 217.5)
XYZ	xyz(18.1410, 23.5442, 41.6108)
Luminance	0.2355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2591AA #AA3E25

analogous

#25AA80 #2591AA #254FAA

triadic

#2591AA #AA2591 #91AA25

tetradic

#2591AA #8025AA #AA3E25 #4FAA25

square

#2591AA #8025AA #AA3E25 #4FAA25

split-complementary

#2591AA #AA254F #AA8025

monochromatic

#0F3B45 #1A6678 #2591AA #38B7D4 #6BC9DF

Accessibility & contrast

On white

3.68

#2591AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#2591AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2591AA

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2591AA	#FFFFFF	#000000	##000000
##2591AA	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818DAB

Deuteranopia (green-blind)

#6F80AA

Tritanopia (blue-blind)

#009A99

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #2591aa;
/* rgb */ color: rgb(37, 145, 170);
/* oklch */ color: oklch(60.9% 0.099 217.5);

Tailwind

colors: {
  custom: {
    50: '#76b1c3',
    500: '#2591aa',
    950: '#000000',
  },
}

SCSS

$custom: #2591aa;
$custom-light: #76b1c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2591aa",
  "rgb": {
    "r": 37,
    "g": 145,
    "b": 170
  },
  "hsl": {
    "h": 191.278,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.60911,
    "c": 0.09939,
    "h": 217.5
  },
  "luminance": 0.23546
}

Semantic roles & 50–950 ramp

primary

#2591AA

secondary

#C57866

accent

#6041E7

background

#F7FAFC

surface

#EEF5F8

border

#C9CFD1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #2591AA

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

Preview Lab → · Contrast checker → · Palette generator →