#288B51#288B51

#288B51 is a mid, vivid green. Relative luminance 0.195; OKLCH L 56.6% C 0.127 H 153.2°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#288B51
RGB	rgb(40, 139, 81)
HSL	hsl(145, 55%, 35%)
HSV	hsv(145, 71%, 55%)
CMYK	cmyk(71.2%, 0%, 41.7%, 45.5%)
CIE-LAB	lab(51.28, -42.03, 23.02)
CIE-LCH	lch(51.28, 47.93, 151.29°)
OKLab	oklab(56.56% -0.1134 0.0572)
OKLCH	oklch(56.56% 0.127 153.2)
XYZ	xyz(11.5919, 19.5091, 10.9377)
Luminance	0.1951 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288B51 #8B2862

analogous

#318B28 #288B51 #288B82

triadic

#288B51 #51288B #8B5128

tetradic

#288B51 #28318B #8B2862 #8B8228

square

#288B51 #28318B #8B2862 #8B8228

split-complementary

#288B51 #82288B #8B2831

monochromatic

#0D2C1A #1A5B35 #288B51 #36BB6D #5DD08D

Accessibility & contrast

On white

4.28

#288B51 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#288B51 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288B51

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288B51	#FFFFFF	#000000	##000000
##288B51	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B7F4D

Deuteranopia (green-blind)

#7F7755

Tritanopia (blue-blind)

#00897D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #288b51;
/* rgb */ color: rgb(40, 139, 81);
/* oklch */ color: oklch(56.6% 0.127 153.2);

Tailwind

colors: {
  custom: {
    50: '#70ae82',
    500: '#288b51',
    950: '#000000',
  },
}

SCSS

$custom: #288b51;
$custom-light: #70ae82;
$custom-dark: #000000;

JSON

{
  "hex": "#288b51",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 81
  },
  "hsl": {
    "h": 144.848,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.56564,
    "c": 0.12701,
    "h": 153.2
  },
  "luminance": 0.1951
}

Semantic roles & 50–950 ramp

primary

#288B51

secondary

#B6598F

accent

#49A1DF

background

#F7FAF8

surface

#EDF4EF

border

#C8CECA

text

#08100A

muted

#7B7F7C

Preview Lab

Preview with #288B51

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

Preview Lab → · Contrast checker → · Palette generator →