#018F23
Closest named color: Emerald Green (#028F1E). oklch(56.5% 0.179 144.8), rgb(1, 143, 35).
Aa
Black text reads best on this color (4.95:1).
About this color
#018F23 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.179 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald Green (#028F1E), ΔE 0.003 away. Black text reads best on it, at 4.95:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Emerald Green (#028F1E) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #018F23 |
| RGB | rgb(1, 143, 35) |
| HSL | hsl(134, 99%, 28%) |
| OKLCH | oklch(56.5% 0.179 144.8) |
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 #018F23 | 4.23:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #018F23 | 4.95:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #018F23 text on white | 4.23:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #018F23 text on black | 4.95:1 | AA | Lc -33.1 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E1C7
oklch(88.4% 0.044 144.2)
-
Step 300
300
#A1CFA1
oklch(81% 0.08 144.8)
-
Step 400
400
#6AB56C
oklch(70.6% 0.128 144.6)
-
Step 500
500
#3AA243
oklch(63.1% 0.164 144.7)
-
Step 600
600 (this color)
#018F23
oklch(56.5% 0.179 144.8)
-
Step 700
700
#00761B
oklch(49.2% 0.156 144.8)
-
Step 800
800
#006114
oklch(42.8% 0.136 144.7)
-
Step 900
900
#104F18
oklch(37.6% 0.106 144.9)
-
Step 950
950
#0C2F0F
oklch(27.1% 0.069 144.8)
#018F23 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) | #92800E | 0.132 |
| Deuteranopia (no green cones) | #85772F | 0.133 |
| Tritanopia (no blue cones) | #008B7A | 0.112 |
| Achromatopsia (no color) | #7B7B7B | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #018F23
#018F23
oklch(56.5% 0.179 144.8)
- #A748AF
#A748AF
oklch(56.5% 0.178 324.5)
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 #018F23, closest first.
No curated palette has a color within ΔE 0.04 of #018F23.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald Green #028F1E ΔE 0.003
- Forest Green #228B22 ΔE 0.013
- Irish Green #019529 ΔE 0.018
- Kelley Green #009337 ΔE 0.018
- True Green #089404 ΔE 0.022
- Dark Grass Green #388004 ΔE 0.044
- Green #008000 ΔE 0.046
- Tree Green #2A7E19 ΔE 0.050
Use #018F23 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.