#51BF96
Closest named color: Greenblue (#23C48B). oklch(73% 0.118 165.7), rgb(81, 191, 150).
Aa
Black text reads best on this color (9.24:1).
About this color
#51BF96 is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.118 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.033 away. Black text reads best on it, at 9.24:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #51BF96 |
| RGB | rgb(81, 191, 150) |
| HSL | hsl(158, 46%, 53%) |
| OKLCH | oklch(73% 0.118 165.7) |
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 #51BF96 | 2.27:1 | Fails | Lc -49.4 | Large or bold text, headings |
| Black text on #51BF96 | 9.24:1 | AAA | Lc 59.4 | Large or bold text, headings |
| #51BF96 text on white | 2.27:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #51BF96 text on black | 9.24:1 | AAA | Lc -57.6 | 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
#F0F8F4
oklch(97.2% 0.01 164.9)
-
Step 100
100
#DDEFE6
oklch(93.6% 0.022 164.5)
-
Step 200
200
#C1E2D3
oklch(88.5% 0.04 166.2)
-
Step 300
300
#93D0B5
oklch(80.8% 0.073 165.4)
-
Step 400
400 (this color)
#51BF96
oklch(73% 0.118 165.7)
-
Step 500
500
#00A276
oklch(63.1% 0.132 165.5)
-
Step 600
600
#008863
oklch(55.6% 0.116 165.8)
-
Step 700
700
#007353
oklch(49.2% 0.103 165.6)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#51BF96 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) | #BBB394 | 0.117 |
| Deuteranopia (no green cones) | #ABA799 | 0.114 |
| Tritanopia (no blue cones) | #17BFB3 | 0.045 |
| Achromatopsia (no color) | #ACACAC | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BF96
#51BF96
oklch(73% 0.118 165.7)
- #DD88B8
#DD88B8
oklch(73% 0.119 345.5)
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 #51BF96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.033
- Green Blue #01C08D ΔE 0.034
- Greeny Blue #42B395 ΔE 0.038
- Topaz #13BBAF ΔE 0.046
- Medium Aquamarine #66CDAA ΔE 0.048
- Soft Green #6FC276 ΔE 0.048
- Dark Mint #48C072 ΔE 0.051
- Faded Green #7BB274 ΔE 0.052
Use #51BF96 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.