#12D991
Closest named color: Aqua Green (#12E193). oklch(78.2% 0.174 160.2), rgb(18, 217, 145).
Aa
Black text reads best on this color (11.35:1).
About this color
#12D991 is a light, vivid green. In OKLCH its lightness is 78%, its chroma 0.174 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.022 away. Black text reads best on it, at 11.35:1.
| Hue family | Greens |
| Lightness | light (78%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.35:1 |
| White text | 1.84:1 |
Values
| HEX | #12D991 |
| RGB | rgb(18, 217, 145) |
| HSL | hsl(158, 85%, 46%) |
| OKLCH | oklch(78.2% 0.174 160.2) |
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 #12D991 | 1.84:1 | Fails | Lc -38.2 | Non-text elements, placeholder text |
| Black text on #12D991 | 11.35:1 | AAA | Lc 69.8 | Content text, not long reading |
| #12D991 text on white | 1.84:1 | Fails | Lc 34.1 | Non-text elements, placeholder text |
| #12D991 text on black | 11.35:1 | AAA | Lc -68.5 | Content text, not long reading |
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 300.
-
Step 50
50
#E9FBF0
oklch(97.2% 0.024 159.2)
-
Step 100
100
#CEF5DF
oklch(93.6% 0.05 160.6)
-
Step 200
200
#9FEDC4
oklch(88.4% 0.096 160.7)
-
Step 300
300 (this color)
#12D991
oklch(78.2% 0.174 160.2)
-
Step 400
400
#00BE7E
oklch(70.7% 0.159 160.3)
-
Step 500
500
#00A36B
oklch(63.1% 0.143 160.1)
-
Step 600
600
#008959
oklch(55.6% 0.126 160)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#12D991 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) | #D6C88D | 0.163 |
| Deuteranopia (no green cones) | #C1B896 | 0.160 |
| Tritanopia (no blue cones) | #00D8C6 | 0.074 |
| Achromatopsia (no color) | #BFBFBF | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12D991
#12D991
oklch(78.2% 0.174 160.2)
- #FF88DA
#FF88DA
oklch(78.2% 0.172 340.2)
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 #12D991, closest first.
No curated palette has a color within ΔE 0.04 of #12D991.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.022
- Emerald #06D6A0 ΔE 0.024
- Seaweed #18D17B ΔE 0.030
- Weird Green #3AE57F ΔE 0.048
- Greenblue #23C48B ΔE 0.059
- Aqua Marine #2EE8BB ΔE 0.063
- Algae Green #21C36F ΔE 0.065
- Soft Green #6FC276 ΔE 0.068
Use #12D991 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.