#51D98F
Closest named color: Aqua Green (#12E193). oklch(79.3% 0.159 155.9), rgb(81, 217, 143).
Aa
Black text reads best on this color (11.67:1).
About this color
#51D98F is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.159 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.027 away. Black text reads best on it, at 11.67:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.67:1 |
| White text | 1.79:1 |
Values
| HEX | #51D98F |
| RGB | rgb(81, 217, 143) |
| HSL | hsl(147, 64%, 58%) |
| OKLCH | oklch(79.3% 0.159 155.9) |
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 #51D98F | 1.79:1 | Fails | Lc -37.0 | Non-text elements, placeholder text |
| Black text on #51D98F | 11.67:1 | AAA | Lc 70.8 | Content text, not long reading |
| #51D98F text on white | 1.79:1 | Fails | Lc 33.0 | Non-text elements, placeholder text |
| #51D98F text on black | 11.67:1 | AAA | Lc -69.6 | 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
#EBFAF0
oklch(97.1% 0.021 156.8)
-
Step 100
100
#D2F4DD
oklch(93.6% 0.047 155.8)
-
Step 200
200
#A9EBC1
oklch(88.5% 0.088 156.2)
-
Step 300
300 (this color)
#51D98F
oklch(79.3% 0.159 155.9)
-
Step 400
400
#00BF71
oklch(70.7% 0.172 155.9)
-
Step 500
500
#00A460
oklch(63.2% 0.154 155.8)
-
Step 600
600
#008A50
oklch(55.7% 0.136 155.8)
-
Step 700
700
#007443
oklch(49.1% 0.119 156.1)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#002F18
oklch(26.8% 0.065 156.1)
#51D98F 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) | #D8C98A | 0.143 |
| Deuteranopia (no green cones) | #C6BC94 | 0.140 |
| Tritanopia (no blue cones) | #03D7C6 | 0.077 |
| Achromatopsia (no color) | #C1C1C1 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51D98F
#51D98F
oklch(79.3% 0.159 155.9)
- #FA91E2
#FA91E2
oklch(79.3% 0.16 336)
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 #51D98F, closest first.
No curated palette has a color within ΔE 0.04 of #51D98F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.027
- Emerald #06D6A0 ΔE 0.033
- Seaweed #18D17B ΔE 0.042
- Weird Green #3AE57F ΔE 0.045
- Aqua Marine #2EE8BB ΔE 0.058
- Medium Aquamarine #66CDAA ΔE 0.060
- Soft Green #6FC276 ΔE 0.061
- Fresh Green #69D84F ΔE 0.066
Use #51D98F 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.