#31B457#31B457

#31B457 is a light, vivid green. Relative luminance 0.340; OKLCH L 67.9% C 0.173 H 148.7°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#31B457
RGB	rgb(49, 180, 87)
HSL	hsl(137, 57%, 45%)
HSV	hsv(137, 73%, 71%)
CMYK	cmyk(72.8%, 0%, 51.7%, 29.4%)
CIE-LAB	lab(64.95, -54.99, 37.30)
CIE-LCH	lch(64.95, 66.45, 145.85°)
OKLab	oklab(67.94% -0.148 0.0901)
OKLCH	oklch(67.94% 0.173 148.7)
XYZ	xyz(19.3067, 33.9814, 14.5565)
Luminance	0.3398 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B457 #B4318E

analogous

#4CB431 #31B457 #31B499

triadic

#31B457 #5731B4 #B45731

tetradic

#31B457 #314CB4 #B4318E #B49931

square

#31B457 #314CB4 #B4318E #B49931

split-complementary

#31B457 #9931B4 #B4314C

monochromatic

#175428 #248440 #31B457 #52D077 #82DD9D

Accessibility & contrast

On white

2.69

#31B457 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#31B457 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B457

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B457	#FFFFFF	#000000	##000000
##31B457	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A44F

Deuteranopia (green-blind)

#A6995E

Tritanopia (blue-blind)

#00B09F

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #31b457;
/* rgb */ color: rgb(49, 180, 87);
/* oklch */ color: oklch(67.9% 0.173 148.7);

Tailwind

colors: {
  custom: {
    50: '#7ccc88',
    500: '#31b457',
    950: '#000000',
  },
}

SCSS

$custom: #31b457;
$custom-light: #7ccc88;
$custom-dark: #000000;

JSON

{
  "hex": "#31b457",
  "rgb": {
    "r": 49,
    "g": 180,
    "b": 87
  },
  "hsl": {
    "h": 137.405,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.67937,
    "c": 0.17326,
    "h": 148.7
  },
  "luminance": 0.33984
}

Semantic roles & 50–950 ramp

primary

#31B457

secondary

#C67BB0

accent

#47B4E0

background

#F8FCF8

surface

#EFF9F0

border

#CAD2CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B457

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

Preview Lab → · Contrast checker → · Palette generator →