#51BE58
Closest named color: Dark Mint (#48C072). oklch(71.5% 0.173 144.6), rgb(81, 190, 88).
Aa
Black text reads best on this color (8.85:1).
About this color
#51BE58 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.173 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.028 away. Black text reads best on it, at 8.85:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 8.85:1 |
| White text | 2.37:1 |
Values
| HEX | #51BE58 |
| RGB | rgb(81, 190, 88) |
| HSL | hsl(124, 46%, 53%) |
| OKLCH | oklch(71.5% 0.173 144.6) |
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 #51BE58 | 2.37:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #51BE58 | 8.85:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #51BE58 text on white | 2.37:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #51BE58 text on black | 8.85:1 | AAA | Lc -55.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DEF0DD
oklch(93.7% 0.032 143.9)
-
Step 200
200
#C2E4C1
oklch(88.5% 0.059 144.3)
-
Step 300
300
#94D395
oklch(80.8% 0.108 144.9)
-
Step 400
400 (this color)
#51BE58
oklch(71.5% 0.173 144.6)
-
Step 500
500
#00A629
oklch(63% 0.2 144.7)
-
Step 600
600
#008C21
oklch(55.6% 0.177 144.7)
-
Step 700
700
#00761A
oklch(49.2% 0.156 144.6)
-
Step 800
800
#006114
oklch(42.8% 0.136 144.7)
-
Step 900
900
#00510F
oklch(37.8% 0.12 144.7)
-
Step 950
950
#003006
oklch(26.9% 0.085 144.8)
#51BE58 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) | #C1AE4F | 0.130 |
| Deuteranopia (no green cones) | #B3A55F | 0.128 |
| Tritanopia (no blue cones) | #3DB9A7 | 0.107 |
| Achromatopsia (no color) | #A8A8A8 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BE58
#51BE58
oklch(71.5% 0.173 144.6)
- #D779DE
#D779DE
oklch(71.5% 0.172 324.6)
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 #51BE58, closest first.
No curated palette has a color within ΔE 0.04 of #51BE58.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.028
- Algae Green #21C36F ΔE 0.028
- Leafy Green #51B73B ΔE 0.029
- Cool Green #33B864 ΔE 0.030
- Turtle Green #75B84F ΔE 0.031
- Dark Mint Green #20C073 ΔE 0.033
- Shamrock Green #02C14D ΔE 0.034
- Boring Green #63B365 ΔE 0.041
Use #51BE58 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.