#309A53
Closest named color: Light Forest Green (#4F9153). oklch(60.9% 0.143 150.5), rgb(48, 154, 83).
Aa
Black text reads best on this color (5.87:1).
About this color
#309A53 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.143 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.033 away. Black text reads best on it, at 5.87:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #309A53 |
| RGB | rgb(48, 154, 83) |
| HSL | hsl(140, 52%, 40%) |
| OKLCH | oklch(60.9% 0.143 150.5) |
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 #309A53 | 3.57:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #309A53 | 5.87:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #309A53 text on white | 3.57:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #309A53 text on black | 5.87:1 | AA | Lc -38.7 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE3
oklch(93.6% 0.02 150.1)
-
Step 200
200
#C8E1CC
oklch(88.5% 0.039 150)
-
Step 300
300
#A1CEA9
oklch(80.9% 0.07 149.9)
-
Step 400
400
#6AB47C
oklch(70.7% 0.111 150.6)
-
Step 500
500 (this color)
#309A53
oklch(60.9% 0.143 150.5)
-
Step 600
600
#008B40
oklch(55.7% 0.152 150.4)
-
Step 700
700
#007535
oklch(49.2% 0.134 150.5)
-
Step 800
800
#00602A
oklch(42.8% 0.117 150.4)
-
Step 900
900
#0F4F26
oklch(37.8% 0.093 150.6)
-
Step 950
950
#0C2E16
oklch(26.9% 0.059 150.2)
#309A53 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) | #9B8D4E | 0.119 |
| Deuteranopia (no green cones) | #8E8458 | 0.117 |
| Tritanopia (no blue cones) | #009789 | 0.079 |
| Achromatopsia (no color) | #878787 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309A53
#309A53
oklch(60.9% 0.143 150.5)
- #B260AA
#B260AA
oklch(61% 0.142 330.8)
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 #309A53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.033
- Fern Green #548D44 ΔE 0.041
- Kelley Green #009337 ΔE 0.041
- Muted Green #5FA052 ΔE 0.044
- Viridian #1E9167 ΔE 0.045
- Ocean Green #3D9973 ΔE 0.047
- Jade #1FA774 ΔE 0.047
- Sea Green #2E8B57 ΔE 0.048
Use #309A53 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.