#1B901C#1B901C

#1B901C is a mid, vivid green. Relative luminance 0.203; OKLCH L 57.0% C 0.180 H 142.8°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B901C
RGB	rgb(27, 144, 28)
HSL	hsl(121, 68%, 34%)
HSV	hsv(121, 81%, 56%)
CMYK	cmyk(81.3%, 0%, 80.6%, 43.5%)
CIE-LAB	lab(52.13, -52.74, 48.58)
CIE-LCH	lch(52.13, 71.71, 137.35°)
OKLab	oklab(57.01% -0.1431 0.1085)
OKLCH	oklch(57.01% 0.18 142.8)
XYZ	xyz(10.6342, 20.2621, 4.4489)
Luminance	0.2026 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B901C #901B8F

analogous

#54901B #1B901C #1B9056

triadic

#1B901C #1C1B90 #901C1B

tetradic

#1B901C #1B5490 #901B8F #90561B

square

#1B901C #1B5490 #901B8F #90561B

split-complementary

#1B901C #561B90 #901B54

monochromatic

#082908 #115C12 #1B901C #25C426 #49DD4A

Accessibility & contrast

On white

4.16

#1B901C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#1B901C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B901C

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B901C	#FFFFFF	#000000	##000000
##1B901C	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)

#87792A

Tritanopia (blue-blind)

#008C7B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #1b901c;
/* rgb */ color: rgb(27, 144, 28);
/* oklch */ color: oklch(57.0% 0.180 142.8);

Tailwind

colors: {
  custom: {
    50: '#6fb262',
    500: '#1b901c',
    950: '#000000',
  },
}

SCSS

$custom: #1b901c;
$custom-light: #6fb262;
$custom-dark: #000000;

JSON

{
  "hex": "#1b901c",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 28
  },
  "hsl": {
    "h": 120.513,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.57013,
    "c": 0.17957,
    "h": 142.8
  },
  "luminance": 0.20263
}

Semantic roles & 50–950 ramp

primary

#1B901C

secondary

#BF48BE

accent

#3DEAEB

background

#F7FBF6

surface

#EDF6EB

border

#C8D0C6

text

#091106

muted

#7B807A

Preview Lab

Preview with #1B901C

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

Preview Lab → · Contrast checker → · Palette generator →