#23B40B
Closest named color: Kelly Green (#02AB2E). oklch(67.1% 0.221 141.7), rgb(35, 180, 11).
Aa
Black text reads best on this color (7.60:1).
About this color
#23B40B is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.221 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.034 away. Black text reads best on it, at 7.60:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.221) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.60:1 |
| White text | 2.76:1 |
Values
| HEX | #23B40B |
| RGB | rgb(35, 180, 11) |
| HSL | hsl(111, 88%, 37%) |
| OKLCH | oklch(67.1% 0.221 141.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #23B40B | 2.76:1 | Fails | Lc -57.8 | Large or bold text, headings |
| Black text on #23B40B | 7.60:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #23B40B text on white | 2.76:1 | Fails | Lc 52.6 | Large or bold text, headings |
| #23B40B text on black | 7.60:1 | AAA | Lc -49.2 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#EFF9ED
oklch(97.1% 0.019 140.5)
-
Step 100
100
#DCF1D9
oklch(93.6% 0.039 141.7)
-
Step 200
200
#BDE7B8
oklch(88.6% 0.077 142.1)
-
Step 300
300
#8CD782
oklch(80.9% 0.138 141.5)
-
Step 400
400 (this color)
#23B40B
oklch(67.1% 0.221 141.7)
-
Step 500
500
#1BA600
oklch(63.1% 0.21 141.6)
-
Step 600
600
#158C00
oklch(55.7% 0.186 141.6)
-
Step 700
700
#107600
oklch(49.2% 0.164 141.6)
-
Step 800
800
#0B6100
oklch(42.8% 0.143 141.7)
-
Step 900
900
#085100
oklch(37.8% 0.126 141.6)
-
Step 950
950
#033000
oklch(26.9% 0.09 141.6)
#23B40B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #B9A200 | 0.155 |
| Deuteranopia (no green cones) | #A99829 | 0.151 |
| Tritanopia (no blue cones) | #00AE99 | 0.146 |
| Achromatopsia (no color) | #9C9C9C | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23B40B
#23B40B
oklch(67.1% 0.221 141.7)
- #D15BE4
#D15BE4
oklch(67.1% 0.22 321.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #23B40B, closest first.
No curated palette has a color within ΔE 0.04 of #23B40B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.034
- Shamrock #01B44C ΔE 0.039
- Leafy Green #51B73B ΔE 0.041
- Frog Green #58BC08 ΔE 0.042
- Leaf Green #5CA904 ΔE 0.043
- Shamrock Green #02C14D ΔE 0.046
- Grass #5CAC2D ΔE 0.047
- Medium Green #39AD48 ΔE 0.049
Use #23B40B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.