#51A97A
Closest named color: Tea (#65AB7C). oklch(66.7% 0.111 158), rgb(81, 169, 122).
Aa
Black text reads best on this color (7.30:1).
About this color
#51A97A is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.111 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tea (#65AB7C), ΔE 0.020 away. Black text reads best on it, at 7.30:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Tea (#65AB7C) |
| Black text | 7.30:1 |
| White text | 2.87:1 |
Values
| HEX | #51A97A |
| RGB | rgb(81, 169, 122) |
| HSL | hsl(148, 35%, 49%) |
| OKLCH | oklch(66.7% 0.111 158) |
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 #51A97A | 2.87:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #51A97A | 7.30:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #51A97A text on white | 2.87:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #51A97A text on black | 7.30:1 | AAA | Lc -47.1 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#C9E0D2
oklch(88.6% 0.031 159)
-
Step 300
300
#A4CCB3
oklch(80.9% 0.055 157.5)
-
Step 400
400
#70B18C
oklch(70.6% 0.086 158.3)
-
Step 500
500 (this color)
#51A97A
oklch(66.7% 0.111 158)
-
Step 600
600
#1C8857
oklch(55.6% 0.121 157.9)
-
Step 700
700
#087347
oklch(49% 0.112 157.9)
-
Step 800
800
#105E3B
oklch(42.8% 0.093 158.1)
-
Step 900
900
#184D32
oklch(37.7% 0.073 157.6)
-
Step 950
950
#102D1E
oklch(27% 0.045 158.6)
#51A97A 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) | #A89E77 | 0.103 |
| Deuteranopia (no green cones) | #9B957D | 0.100 |
| Tritanopia (no blue cones) | #37A89C | 0.050 |
| Achromatopsia (no color) | #989898 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A97A
#51A97A
oklch(66.7% 0.111 158)
- #C079AC
#C079AC
oklch(66.7% 0.11 337.9)
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 #51A97A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tea #65AB7C ΔE 0.020
- Dark Seafoam Green #3EAF76 ΔE 0.023
- Algae #54AC68 ΔE 0.028
- Bluey Green #2BB179 ΔE 0.031
- Jade #1FA774 ΔE 0.032
- Seaweed Green #35AD6B ΔE 0.034
- Dusty Green #76A973 ΔE 0.035
- Medium Sea Green #3CB371 ΔE 0.037
Use #51A97A 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.