#278F4B#278F4B

#278F4B is a mid, vivid green. Relative luminance 0.206; OKLCH L 57.5% C 0.139 H 150.6°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#278F4B
RGB	rgb(39, 143, 75)
HSL	hsl(141, 57%, 36%)
HSV	hsv(141, 73%, 56%)
CMYK	cmyk(72.7%, 0%, 47.6%, 43.9%)
CIE-LAB	lab(52.49, -44.88, 27.85)
CIE-LCH	lch(52.49, 52.82, 148.18°)
OKLab	oklab(57.53% -0.1208 0.0682)
OKLCH	oklch(57.53% 0.139 150.6)
XYZ	xyz(11.9282, 20.5829, 9.9995)
Luminance	0.2058 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278F4B #8F276B

analogous

#378F27 #278F4B #278F7F

triadic

#278F4B #4B278F #8F4B27

tetradic

#278F4B #27378F #8F276B #8F7F27

square

#278F4B #27378F #8F276B #8F7F27

split-complementary

#278F4B #7F278F #8F2737

monochromatic

#0D2F19 #1A5F32 #278F4B #34BF64 #5DD386

Accessibility & contrast

On white

4.10

#278F4B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#278F4B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278F4B

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278F4B	#FFFFFF	#000000	##000000
##278F4B	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#908346

Deuteranopia (green-blind)

#837A50

Tritanopia (blue-blind)

#008D7F

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #278f4b;
/* rgb */ color: rgb(39, 143, 75);
/* oklch */ color: oklch(57.5% 0.139 150.6);

Tailwind

colors: {
  custom: {
    50: '#70b17e',
    500: '#278f4b',
    950: '#000000',
  },
}

SCSS

$custom: #278f4b;
$custom-light: #70b17e;
$custom-dark: #000000;

JSON

{
  "hex": "#278f4b",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 75
  },
  "hsl": {
    "h": 140.769,
    "s": 57.143,
    "l": 35.686
  },
  "oklch": {
    "l": 0.57526,
    "c": 0.13874,
    "h": 150.6
  },
  "luminance": 0.20584
}

Semantic roles & 50–950 ramp

primary

#278F4B

secondary

#B85A97

accent

#47ABE0

background

#F7FBF7

surface

#EDF6EE

border

#C8D0C9

text

#09110A

muted

#7B807C

Preview Lab

Preview with #278F4B

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

Preview Lab → · Contrast checker → · Palette generator →