#18C679
Closest named color: Algae Green (#21C36F). oklch(72.9% 0.171 156.4), rgb(24, 198, 121).
Aa
Black text reads best on this color (9.39:1).
About this color
#18C679 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.171 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.012 away. Black text reads best on it, at 9.39:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #18C679 |
| RGB | rgb(24, 198, 121) |
| HSL | hsl(153, 78%, 44%) |
| OKLCH | oklch(72.9% 0.171 156.4) |
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 #18C679 | 2.23:1 | Fails | Lc -48.2 | Large or bold text, headings |
| Black text on #18C679 | 9.39:1 | AAA | Lc 60.5 | Content text, not long reading |
| #18C679 text on white | 2.23:1 | Fails | Lc 43.4 | Non-text elements, placeholder text |
| #18C679 text on black | 9.39:1 | AAA | Lc -58.7 | 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
#EEF9F2
oklch(97.2% 0.015 158.3)
-
Step 100
100
#DAF0E1
oklch(93.5% 0.031 156)
-
Step 200
200
#BAE5C9
oklch(88.4% 0.059 156.5)
-
Step 300
300
#84D6A4
oklch(81% 0.108 156.3)
-
Step 400
400 (this color)
#18C679
oklch(72.9% 0.171 156.4)
-
Step 500
500
#00A462
oklch(63.2% 0.152 156.5)
-
Step 600
600
#008A51
oklch(55.7% 0.135 156.2)
-
Step 700
700
#007444
oklch(49.2% 0.118 156.6)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2D
oklch(37.6% 0.09 156.8)
-
Step 950
950
#002F19
oklch(26.9% 0.064 157.1)
#18C679 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) | #C5B574 | 0.155 |
| Deuteranopia (no green cones) | #B2A87E | 0.151 |
| Tritanopia (no blue cones) | #00C4B3 | 0.082 |
| Achromatopsia (no color) | #ADADAD | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18C679
#18C679
oklch(72.9% 0.171 156.4)
- #E879CF
#E879CF
oklch(72.9% 0.171 336.4)
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 #18C679, closest first.
No curated palette has a color within ΔE 0.04 of #18C679.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.012
- Dark Mint Green #20C073 ΔE 0.017
- Dark Mint #48C072 ΔE 0.021
- Greenblue #23C48B ΔE 0.027
- Seaweed #18D17B ΔE 0.032
- Green Blue #01C08D ΔE 0.036
- Cool Green #33B864 ΔE 0.040
- Soft Green #6FC276 ΔE 0.047
Use #18C679 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.