#1B902B#1B902B

#1B902B is a mid, vivid green. Relative luminance 0.204; OKLCH L 57.1% C 0.171 H 144.5°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B902B
RGB	rgb(27, 144, 43)
HSL	hsl(128, 68%, 34%)
HSV	hsv(128, 81%, 56%)
CMYK	cmyk(81.3%, 0%, 70.1%, 43.5%)
CIE-LAB	lab(52.23, -51.48, 43.09)
CIE-LCH	lch(52.23, 67.13, 140.07°)
OKLab	oklab(57.13% -0.139 0.099)
OKLCH	oklch(57.13% 0.171 144.5)
XYZ	xyz(10.8605, 20.3526, 5.6411)
Luminance	0.2035 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B902B #901B80

analogous

#45901B #1B902B #1B9065

triadic

#1B902B #2B1B90 #902B1B

tetradic

#1B902B #1B4590 #901B80 #90651B

square

#1B902B #1B4590 #901B80 #90651B

split-complementary

#1B902B #651B90 #901B45

monochromatic

#08290C #115C1C #1B902B #25C43A #49DD5D

Accessibility & contrast

On white

4.14

#1B902B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#1B902B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B902B

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B902B	#FFFFFF	#000000	##000000
##1B902B	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93821D

Deuteranopia (green-blind)

#867935

Tritanopia (blue-blind)

#008C7C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #1b902b;
/* rgb */ color: rgb(27, 144, 43);
/* oklch */ color: oklch(57.1% 0.171 144.5);

Tailwind

colors: {
  custom: {
    50: '#6eb26a',
    500: '#1b902b',
    950: '#000000',
  },
}

SCSS

$custom: #1b902b;
$custom-light: #6eb26a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b902b",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 43
  },
  "hsl": {
    "h": 128.205,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.5713,
    "c": 0.17065,
    "h": 144.5
  },
  "luminance": 0.20354
}

Semantic roles & 50–950 ramp

primary

#1B902B

secondary

#BF48AE

accent

#3DD3EB

background

#F7FBF6

surface

#EDF6EB

border

#C8D0C6

text

#081107

muted

#7B807A

Preview Lab

Preview with #1B902B

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

Preview Lab → · Contrast checker → · Palette generator →