#31DA90
Closest named color: Aqua Green (#12E193). oklch(78.8% 0.171 158.5), rgb(49, 218, 144).
Aa
Black text reads best on this color (11.56:1).
About this color
#31DA90 is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.171 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.019 away. Black text reads best on it, at 11.56:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.56:1 |
| White text | 1.81:1 |
Values
| HEX | #31DA90 |
| RGB | rgb(49, 218, 144) |
| HSL | hsl(154, 70%, 52%) |
| OKLCH | oklch(78.8% 0.171 158.5) |
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 #31DA90 | 1.81:1 | Fails | Lc -37.4 | Non-text elements, placeholder text |
| Black text on #31DA90 | 11.56:1 | AAA | Lc 70.5 | Content text, not long reading |
| #31DA90 text on white | 1.81:1 | Fails | Lc 33.4 | Non-text elements, placeholder text |
| #31DA90 text on black | 11.56:1 | AAA | Lc -69.3 | 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
#E9FAF0
oklch(97% 0.022 160.2)
-
Step 100
100
#CFF5DE
oklch(93.7% 0.05 158.7)
-
Step 200
200
#A2EDC2
oklch(88.5% 0.095 158.6)
-
Step 300
300 (this color)
#31DA90
oklch(78.8% 0.171 158.5)
-
Step 400
400
#00BE79
oklch(70.6% 0.164 158.6)
-
Step 500
500
#00A367
oklch(63% 0.146 158.5)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#31DA90 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) | #D8C98B | 0.158 |
| Deuteranopia (no green cones) | #C4BA95 | 0.155 |
| Tritanopia (no blue cones) | #00D9C7 | 0.076 |
| Achromatopsia (no color) | #C0C0C0 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31DA90
#31DA90
oklch(78.8% 0.171 158.5)
- #FF8BDF
#FF8BDF
oklch(78.9% 0.171 338.5)
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 #31DA90, closest first.
No curated palette has a color within ΔE 0.04 of #31DA90.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.019
- Emerald #06D6A0 ΔE 0.028
- Seaweed #18D17B ΔE 0.034
- Weird Green #3AE57F ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.059
- Greenblue #23C48B ΔE 0.064
- Medium Aquamarine #66CDAA ΔE 0.066
- Soft Green #6FC276 ΔE 0.067
Use #31DA90 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.