#51CD89
Closest named color: Emerald (#06D6A0). oklch(76.1% 0.148 156.1), rgb(81, 205, 137).
Aa
Black text reads best on this color (10.44:1).
About this color
#51CD89 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.148 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.034 away. Black text reads best on it, at 10.44:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.44:1 |
| White text | 2.01:1 |
Values
| HEX | #51CD89 |
| RGB | rgb(81, 205, 137) |
| HSL | hsl(147, 55%, 56%) |
| OKLCH | oklch(76.1% 0.148 156.1) |
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 #51CD89 | 2.01:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #51CD89 | 10.44:1 | AAA | Lc 65.2 | Content text, not long reading |
| #51CD89 text on white | 2.01:1 | Fails | Lc 38.7 | Non-text elements, placeholder text |
| #51CD89 text on black | 10.44:1 | AAA | Lc -63.7 | 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
#D4F3DE
oklch(93.6% 0.043 155.9)
-
Step 200
200
#ADEAC3
oklch(88.5% 0.082 156.3)
-
Step 300
300 (this color)
#51CD89
oklch(76.1% 0.148 156.1)
-
Step 400
400
#00BF72
oklch(70.8% 0.171 156.2)
-
Step 500
500
#00A461
oklch(63.2% 0.153 156.1)
-
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)
#51CD89 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) | #CCBE85 | 0.134 |
| Deuteranopia (no green cones) | #BBB28D | 0.131 |
| Tritanopia (no blue cones) | #1CCBBB | 0.071 |
| Achromatopsia (no color) | #B7B7B7 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51CD89
#51CD89
oklch(76.1% 0.148 156.1)
- #EB8BD5
#EB8BD5
oklch(76.1% 0.148 335.9)
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 #51CD89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.034
- Soft Green #6FC276 ΔE 0.034
- Seaweed #18D17B ΔE 0.035
- Greenblue #23C48B ΔE 0.037
- Dark Mint #48C072 ΔE 0.042
- Algae Green #21C36F ΔE 0.049
- Medium Aquamarine #66CDAA ΔE 0.050
- Green Blue #01C08D ΔE 0.052
Use #51CD89 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.