#51BF8D
Closest named color: Greenblue (#23C48B). oklch(72.7% 0.126 161.1), rgb(81, 191, 141).
Aa
Black text reads best on this color (9.18:1).
About this color
#51BF8D is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.126 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.026 away. Black text reads best on it, at 9.18:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.18:1 |
| White text | 2.28:1 |
Values
| HEX | #51BF8D |
| RGB | rgb(81, 191, 141) |
| HSL | hsl(153, 46%, 53%) |
| OKLCH | oklch(72.7% 0.126 161.1) |
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 #51BF8D | 2.28:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #51BF8D | 9.18:1 | AAA | Lc 59.2 | Large or bold text, headings |
| #51BF8D text on white | 2.28:1 | Fails | Lc 44.8 | Non-text elements, placeholder text |
| #51BF8D text on black | 9.18:1 | AAA | Lc -57.3 | 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
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DDEFE5
oklch(93.6% 0.023 161.7)
-
Step 200
200
#C1E3D0
oklch(88.6% 0.044 160.9)
-
Step 300
300
#93D1B0
oklch(80.9% 0.079 160.7)
-
Step 400
400 (this color)
#51BF8D
oklch(72.7% 0.126 161.1)
-
Step 500
500
#00A36D
oklch(63.2% 0.141 160.9)
-
Step 600
600
#00895B
oklch(55.6% 0.124 161)
-
Step 700
700
#00734C
oklch(49.1% 0.109 161.2)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#51BF8D 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) | #BDB28A | 0.121 |
| Deuteranopia (no green cones) | #ADA790 | 0.116 |
| Tritanopia (no blue cones) | #22BEB1 | 0.053 |
| Achromatopsia (no color) | #ABABAB | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BF8D
#51BF8D
oklch(72.7% 0.126 161.1)
- #DC86BE
#DC86BE
oklch(72.7% 0.126 341.3)
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 #51BF8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.026
- Green Blue #01C08D ΔE 0.028
- Dark Mint #48C072 ΔE 0.038
- Soft Green #6FC276 ΔE 0.039
- Greeny Blue #42B395 ΔE 0.042
- Dark Mint Green #20C073 ΔE 0.047
- Faded Green #7BB274 ΔE 0.047
- Dark Seafoam #1FB57A ΔE 0.047
Use #51BF8D 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.