#1B901D#1B901D

#1B901D is a mid, vivid green. Relative luminance 0.203; OKLCH L 57.0% C 0.179 H 142.9°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B901D
RGB	rgb(27, 144, 29)
HSL	hsl(121, 68%, 34%)
HSV	hsv(121, 81%, 56%)
CMYK	cmyk(81.3%, 0%, 79.9%, 43.5%)
CIE-LAB	lab(52.14, -52.68, 48.26)
CIE-LCH	lch(52.14, 71.44, 137.50°)
OKLab	oklab(57.02% -0.1429 0.1079)
OKLCH	oklch(57.02% 0.179 142.9)
XYZ	xyz(10.6463, 20.2670, 4.5130)
Luminance	0.2027 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B901D #901B8E

analogous

#53901B #1B901D #1B9057

triadic

#1B901D #1D1B90 #901D1B

tetradic

#1B901D #1B5390 #901B8E #90571B

square

#1B901D #1B5390 #901B8E #90571B

split-complementary

#1B901D #571B90 #901B53

monochromatic

#082908 #115C13 #1B901D #25C427 #49DD4B

Accessibility & contrast

On white

4.16

#1B901D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#1B901D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B901D

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B901D	#FFFFFF	#000000	##000000
##1B901D	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938200

Deuteranopia (green-blind)

#87792B

Tritanopia (blue-blind)

#008C7B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #1b901d;
/* rgb */ color: rgb(27, 144, 29);
/* oklch */ color: oklch(57.0% 0.179 142.9);

Tailwind

colors: {
  custom: {
    50: '#6fb263',
    500: '#1b901d',
    950: '#000000',
  },
}

SCSS

$custom: #1b901d;
$custom-light: #6fb263;
$custom-dark: #000000;

JSON

{
  "hex": "#1b901d",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 29
  },
  "hsl": {
    "h": 121.026,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.57019,
    "c": 0.17907,
    "h": 142.9
  },
  "luminance": 0.20268
}

Semantic roles & 50–950 ramp

primary

#1B901D

secondary

#BF48BD

accent

#3DE8EB

background

#F7FBF6

surface

#EDF6EB

border

#C8D0C6

text

#091106

muted

#7B807A

Preview Lab

Preview with #1B901D

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

Preview Lab → · Contrast checker → · Palette generator →