#528F21
Closest named color: Sap Green (#5C8B15). oklch(58.7% 0.153 134.6), rgb(82, 143, 33).
Aa
Black text reads best on this color (5.30:1).
About this color
#528F21 is a medium-dark, vivid green. In OKLCH its lightness is 59%, its chroma 0.153 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.014 away. Black text reads best on it, at 5.30:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #528F21 |
| RGB | rgb(82, 143, 33) |
| HSL | hsl(93, 63%, 35%) |
| OKLCH | oklch(58.7% 0.153 134.6) |
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 #528F21 | 3.95:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #528F21 | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #528F21 text on white | 3.95:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #528F21 text on black | 5.30:1 | AA | Lc -35.0 | 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 600.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE0
oklch(93.6% 0.02 135.8)
-
Step 200
200
#CFDFC6
oklch(88.5% 0.038 134.1)
-
Step 300
300
#AECB9E
oklch(80.9% 0.069 134.5)
-
Step 400
400
#83B068
oklch(70.7% 0.111 134.5)
-
Step 500
500
#639C3C
oklch(63.2% 0.142 134.6)
-
Step 600
600 (this color)
#528F21
oklch(58.7% 0.153 134.6)
-
Step 700
700
#3A7100
oklch(49.1% 0.142 134.6)
-
Step 800
800
#305C09
oklch(42.6% 0.118 134.7)
-
Step 900
900
#2B4C13
oklch(37.8% 0.093 134.7)
-
Step 950
950
#1A2C0D
oklch(26.9% 0.057 134)
#528F21 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) | #958308 | 0.091 |
| Deuteranopia (no green cones) | #8C7E2C | 0.091 |
| Tritanopia (no blue cones) | #51897A | 0.112 |
| Achromatopsia (no color) | #808080 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528F21
#528F21
oklch(58.7% 0.153 134.6)
- #9D5CBA
#9D5CBA
oklch(58.6% 0.153 314.5)
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 #528F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.014
- Mossy Green #638B27 ΔE 0.023
- Olive Drab #6B8E23 ΔE 0.029
- Fern Green #548D44 ΔE 0.034
- Moss Green #658B38 ΔE 0.035
- Dark Yellow Green #728F02 ΔE 0.037
- Forest Green #228B22 ΔE 0.040
- Kelley Green #009337 ΔE 0.041
Use #528F21 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.