#538A23
Closest named color: Sap Green (#5C8B15). oklch(57.4% 0.145 133.7), rgb(83, 138, 35).
Aa
Black text reads best on this color (5.02:1).
About this color
#538A23 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.145 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.012 away. Black text reads best on it, at 5.02:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #538A23 |
| RGB | rgb(83, 138, 35) |
| HSL | hsl(92, 60%, 34%) |
| OKLCH | oklch(57.4% 0.145 133.7) |
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 #538A23 | 4.17:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #538A23 | 5.02:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #538A23 text on white | 4.17:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #538A23 text on black | 5.02:1 | AA | Lc -33.1 | 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
#E5EDE0
oklch(93.6% 0.019 133.1)
-
Step 200
200
#D0DFC7
oklch(88.6% 0.036 133.6)
-
Step 300
300
#B0CAA0
oklch(80.8% 0.064 133.6)
-
Step 400
400
#86AF6B
oklch(70.7% 0.104 133.7)
-
Step 500
500
#679A41
oklch(63% 0.132 133.7)
-
Step 600
600 (this color)
#538A23
oklch(57.4% 0.145 133.7)
-
Step 700
700
#3E700B
oklch(49.1% 0.135 133.9)
-
Step 800
800
#345B10
oklch(42.6% 0.111 133.7)
-
Step 900
900
#2E4B16
oklch(37.7% 0.087 133.4)
-
Step 950
950
#1B2C0E
oklch(27% 0.055 133.5)
#538A23 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) | #907F10 | 0.084 |
| Deuteranopia (no green cones) | #887A2D | 0.085 |
| Tritanopia (no blue cones) | #538476 | 0.108 |
| Achromatopsia (no color) | #7C7C7C | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538A23
#538A23
oklch(57.4% 0.145 133.7)
- #975BB4
#975BB4
oklch(57.5% 0.145 313.8)
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 #538A23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.012
- Mossy Green #638B27 ΔE 0.020
- Fern Green #548D44 ΔE 0.030
- Moss Green #658B38 ΔE 0.031
- Olive Drab #6B8E23 ΔE 0.032
- Forest Green #228B22 ΔE 0.038
- Swamp Green #748500 ΔE 0.040
- Dark Yellow Green #728F02 ΔE 0.042
Use #538A23 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.