#51997F
Closest named color: Grey Teal (#5E9B8A). oklch(62.8% 0.083 168), rgb(81, 153, 127).
Aa
Black text reads best on this color (6.21:1).
About this color
#51997F is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.083 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.022 away. Black text reads best on it, at 6.21:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.21:1 |
| White text | 3.38:1 |
Values
| HEX | #51997F |
| RGB | rgb(81, 153, 127) |
| HSL | hsl(158, 31%, 46%) |
| OKLCH | oklch(62.8% 0.083 168) |
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 #51997F | 3.38:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #51997F | 6.21:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #51997F text on white | 3.38:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #51997F text on black | 6.21:1 | AA | Lc -40.6 | Non-text elements, placeholder text |
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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE8
oklch(93.5% 0.011 167.8)
-
Step 200
200
#CCDED6
oklch(88.5% 0.022 167.4)
-
Step 300
300
#A8CABC
oklch(81% 0.041 168.4)
-
Step 400
400
#78AE99
oklch(70.7% 0.065 168.3)
-
Step 500
500 (this color)
#51997F
oklch(62.8% 0.083 168)
-
Step 600
600
#328469
oklch(55.5% 0.09 168.1)
-
Step 700
700
#237057
oklch(49.1% 0.085 167.6)
-
Step 800
800
#205B48
oklch(42.7% 0.069 168.6)
-
Step 900
900
#204B3C
oklch(37.7% 0.055 168.1)
-
Step 950
950
#142C23
oklch(27% 0.035 167.4)
#51997F 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) | #96907E | 0.085 |
| Deuteranopia (no green cones) | #8A8881 | 0.081 |
| Tritanopia (no blue cones) | #399A91 | 0.029 |
| Achromatopsia (no color) | #8C8C8C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51997F
#51997F
oklch(62.8% 0.083 168)
- #AE7491
#AE7491
oklch(62.8% 0.082 348.3)
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 #51997F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.022
- Ocean Green #3D9973 ΔE 0.026
- Persian Green #2A9D8F ΔE 0.030
- Dull Teal #5F9E8F ΔE 0.030
- Sea #3C9992 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.032
- Blue Green #0F9B8E ΔE 0.037
- Slate Green #658D6D ΔE 0.038
Use #51997F 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.