#51D58D
Closest named color: Emerald (#06D6A0). oklch(78.2% 0.156 156), rgb(81, 213, 141).
Aa
Black text reads best on this color (11.25:1).
About this color
#51D58D is a light, vivid green. In OKLCH its lightness is 78%, its chroma 0.156 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.030 away. Black text reads best on it, at 11.25:1.
| Hue family | Greens |
| Lightness | light (78%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 11.25:1 |
| White text | 1.86:1 |
Values
| HEX | #51D58D |
| RGB | rgb(81, 213, 141) |
| HSL | hsl(147, 61%, 58%) |
| OKLCH | oklch(78.2% 0.156 156) |
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 #51D58D | 1.86:1 | Fails | Lc -39.1 | Non-text elements, placeholder text |
| Black text on #51D58D | 11.25:1 | AAA | Lc 69.0 | Content text, not long reading |
| #51D58D text on white | 1.86:1 | Fails | Lc 34.9 | Non-text elements, placeholder text |
| #51D58D text on black | 11.25:1 | AAA | Lc -67.6 | 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
#D3F3DD
oklch(93.5% 0.045 155.4)
-
Step 200
200
#ABEBC1
oklch(88.6% 0.087 155.5)
-
Step 300
300 (this color)
#51D58D
oklch(78.2% 0.156 156)
-
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)
#51D58D 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) | #D4C588 | 0.140 |
| Deuteranopia (no green cones) | #C2B992 | 0.136 |
| Tritanopia (no blue cones) | #0FD3C2 | 0.075 |
| Achromatopsia (no color) | #BEBEBE | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51D58D
#51D58D
oklch(78.2% 0.156 156)
- #F58FDE
#F58FDE
oklch(78.2% 0.156 335.9)
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 #51D58D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.030
- Aqua Green #12E193 ΔE 0.035
- Seaweed #18D17B ΔE 0.037
- Soft Green #6FC276 ΔE 0.052
- Weird Green #3AE57F ΔE 0.054
- Medium Aquamarine #66CDAA ΔE 0.055
- Greenblue #23C48B ΔE 0.057
- Dark Mint #48C072 ΔE 0.062
Use #51D58D 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.