#51A87F
Closest named color: Tea (#65AB7C). oklch(66.6% 0.105 161.1), rgb(81, 168, 127).
Aa
Black text reads best on this color (7.25:1).
About this color
#51A87F is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.105 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tea (#65AB7C), ΔE 0.021 away. Black text reads best on it, at 7.25:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Tea (#65AB7C) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #51A87F |
| RGB | rgb(81, 168, 127) |
| HSL | hsl(152, 35%, 49%) |
| OKLCH | oklch(66.6% 0.105 161.1) |
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 #51A87F | 2.89:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #51A87F | 7.25:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #51A87F text on white | 2.89:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #51A87F text on black | 7.25:1 | AAA | Lc -46.8 | 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 500.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD3
oklch(88.5% 0.028 160.8)
-
Step 300
300
#A4CBB6
oklch(80.8% 0.051 161.5)
-
Step 400
400
#70B190
oklch(70.7% 0.083 161.2)
-
Step 500
500 (this color)
#51A87F
oklch(66.6% 0.105 161.1)
-
Step 600
600
#1D875D
oklch(55.5% 0.114 161.2)
-
Step 700
700
#0A734D
oklch(49.2% 0.106 161.2)
-
Step 800
800
#105D3F
oklch(42.6% 0.087 161.4)
-
Step 900
900
#184D36
oklch(37.8% 0.069 161.4)
-
Step 950
950
#102D1F
oklch(27% 0.044 160.3)
#51A87F 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) | #A69D7D | 0.101 |
| Deuteranopia (no green cones) | #999482 | 0.098 |
| Tritanopia (no blue cones) | #35A89D | 0.044 |
| Achromatopsia (no color) | #989898 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A87F
#51A87F
oklch(66.6% 0.105 161.1)
- #C07AA7
#C07AA7
oklch(66.7% 0.105 341.4)
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 #51A87F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tea #65AB7C ΔE 0.021
- Dark Seafoam Green #3EAF76 ΔE 0.030
- Jade #1FA774 ΔE 0.035
- Greeny Blue #42B395 ΔE 0.036
- Algae #54AC68 ΔE 0.036
- Bluey Green #2BB179 ΔE 0.037
- Dusty Green #76A973 ΔE 0.038
- Seaweed Green #35AD6B ΔE 0.041
Use #51A87F 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.