#278B57#278B57

#278B57 is a mid, vivid green. Relative luminance 0.196; OKLCH L 56.7% C 0.122 H 155.9°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#278B57
RGB	rgb(39, 139, 87)
HSL	hsl(149, 56%, 35%)
HSV	hsv(149, 72%, 55%)
CMYK	cmyk(71.9%, 0%, 37.4%, 45.5%)
CIE-LAB	lab(51.36, -41.01, 19.79)
CIE-LCH	lch(51.36, 45.53, 154.23°)
OKLab	oklab(56.66% -0.1109 0.0496)
OKLCH	oklch(56.66% 0.122 155.9)
XYZ	xyz(11.7885, 19.5834, 12.1737)
Luminance	0.1958 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278B57 #8B275B

analogous

#298B27 #278B57 #278B89

triadic

#278B57 #57278B #8B5727

tetradic

#278B57 #27298B #8B275B #8B8927

square

#278B57 #27298B #8B275B #8B8927

split-complementary

#278B57 #89278B #8B2729

monochromatic

#0C2B1B #1A5B39 #278B57 #34BB75 #5BD194

Accessibility & contrast

On white

4.27

#278B57 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#278B57 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278B57

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278B57	#FFFFFF	#000000	##000000
##278B57	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A8054

Deuteranopia (green-blind)

#7E775A

Tritanopia (blue-blind)

#008A7E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #278b57;
/* rgb */ color: rgb(39, 139, 87);
/* oklch */ color: oklch(56.7% 0.122 155.9);

Tailwind

colors: {
  custom: {
    50: '#6fae87',
    500: '#278b57',
    950: '#000000',
  },
}

SCSS

$custom: #278b57;
$custom-light: #6fae87;
$custom-dark: #000000;

JSON

{
  "hex": "#278b57",
  "rgb": {
    "r": 39,
    "g": 139,
    "b": 87
  },
  "hsl": {
    "h": 148.8,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.56663,
    "c": 0.12154,
    "h": 155.9
  },
  "luminance": 0.19585
}

Semantic roles & 50–950 ramp

primary

#278B57

secondary

#B65889

accent

#4897DF

background

#F7FAF8

surface

#EDF4EF

border

#C8CECA

text

#08100B

muted

#7B7F7C

Preview Lab

Preview with #278B57

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

Preview Lab → · Contrast checker → · Palette generator →