#278B4B#278B4B

#278B4B is a mid, vivid green. Relative luminance 0.194; OKLCH L 56.4% C 0.133 H 151.1°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#278B4B
RGB	rgb(39, 139, 75)
HSL	hsl(142, 56%, 35%)
HSV	hsv(142, 72%, 55%)
CMYK	cmyk(71.9%, 0%, 46%, 45.5%)
CIE-LAB	lab(51.16, -43.33, 26.15)
CIE-LCH	lch(51.16, 50.61, 148.89°)
OKLab	oklab(56.43% -0.1167 0.0643)
OKLCH	oklch(56.43% 0.133 151.1)
XYZ	xyz(11.3384, 19.4033, 9.8029)
Luminance	0.1941 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278B4B #8B2767

analogous

#358B27 #278B4B #278B7D

triadic

#278B4B #4B278B #8B4B27

tetradic

#278B4B #27358B #8B2767 #8B7D27

square

#278B4B #27358B #8B2767 #8B7D27

split-complementary

#278B4B #7D278B #8B2735

monochromatic

#0C2B17 #1A5B31 #278B4B #34BB65 #5BD186

Accessibility & contrast

On white

4.30

#278B4B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#278B4B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278B4B

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278B4B	#FFFFFF	#000000	##000000
##278B4B	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C7F46

Deuteranopia (green-blind)

#7F764F

Tritanopia (blue-blind)

#00897C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #278b4b;
/* rgb */ color: rgb(39, 139, 75);
/* oklch */ color: oklch(56.4% 0.133 151.1);

Tailwind

colors: {
  custom: {
    50: '#6fae7e',
    500: '#278b4b',
    950: '#000000',
  },
}

SCSS

$custom: #278b4b;
$custom-light: #6fae7e;
$custom-dark: #000000;

JSON

{
  "hex": "#278b4b",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 75
  },
  "hsl": {
    "h": 141.6,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.56425,
    "c": 0.13324,
    "h": 151.1
  },
  "luminance": 0.19405
}

Semantic roles & 50–950 ramp

primary

#278B4B

secondary

#B65894

accent

#48A9DF

background

#F7FAF7

surface

#EDF4EE

border

#C8CEC9

text

#08100A

muted

#7B7F7C

Preview Lab

Preview with #278B4B

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

Preview Lab → · Contrast checker → · Palette generator →