#51909E#51909E

#51909E is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.6% C 0.068 H 213.7°. Best body text is #000000 at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#51909E
RGB	rgb(81, 144, 158)
HSL	hsl(191, 32%, 47%)
HSV	hsv(191, 49%, 62%)
CMYK	cmyk(48.7%, 8.9%, 0%, 38%)
CIE-LAB	lab(56.25, -16.35, -13.70)
CIE-LCH	lch(56.25, 21.33, 219.95°)
OKLab	oklab(61.65% -0.0567 -0.0378)
OKLCH	oklch(61.65% 0.068 213.7)
XYZ	xyz(19.5358, 24.1629, 35.9755)
Luminance	0.2416 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51909E #9E5F51

analogous

#519E86 #51909E #516A9E

triadic

#51909E #9E5190 #909E51

tetradic

#51909E #86519E #9E5F51 #6A9E51

square

#51909E #86519E #9E5F51 #6A9E51

split-complementary

#51909E #9E516A #9E8651

monochromatic

#28464D #3C6B76 #51909E #74ACB8 #9DC4CD

Accessibility & contrast

On white

3.60

#51909E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.83

#51909E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51909E

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51909E	#FFFFFF	#000000	##000000
##51909E	1.00	3.60	5.83	5.83
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.83	21.00	1.00	1.00
##000000	5.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#858C9F

Deuteranopia (green-blind)

#79839E

Tritanopia (blue-blind)

#289694

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #51909e;
/* rgb */ color: rgb(81, 144, 158);
/* oklch */ color: oklch(61.6% 0.068 213.7);

Tailwind

colors: {
  custom: {
    50: '#87b0ba',
    500: '#51909e',
    950: '#000000',
  },
}

SCSS

$custom: #51909e;
$custom-light: #87b0ba;
$custom-dark: #000000;

JSON

{
  "hex": "#51909e",
  "rgb": {
    "r": 81,
    "g": 144,
    "b": 158
  },
  "hsl": {
    "h": 190.909,
    "s": 32.218,
    "l": 46.863
  },
  "oklch": {
    "l": 0.61648,
    "c": 0.06813,
    "h": 213.7
  },
  "luminance": 0.24164
}

Semantic roles & 50–950 ramp

primary

#51909E

secondary

#BA9991

accent

#735FC8

background

#F8FAFB

surface

#F0F4F6

border

#CBCED0

text

#0C1011

muted

#7D7F80

Preview Lab

Preview with #51909E

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

Preview Lab → · Contrast checker → · Palette generator →