#309D5A
Closest named color: Jade (#1FA774). oklch(61.8% 0.14 152.3), rgb(48, 157, 90).
Aa
Black text reads best on this color (6.09:1).
About this color
#309D5A is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.140 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.037 away. Black text reads best on it, at 6.09:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.09:1 |
| White text | 3.44:1 |
Values
| HEX | #309D5A |
| RGB | rgb(48, 157, 90) |
| HSL | hsl(143, 53%, 40%) |
| OKLCH | oklch(61.8% 0.14 152.3) |
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 #309D5A | 3.44:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #309D5A | 6.09:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #309D5A text on white | 3.44:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #309D5A text on black | 6.09:1 | AA | Lc -40.1 | 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 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
#C7E1CD
oklch(88.5% 0.039 152.4)
-
Step 300
300
#A0CEAB
oklch(80.9% 0.069 152)
-
Step 400
400
#68B47F
oklch(70.6% 0.109 152.5)
-
Step 500
500 (this color)
#309D5A
oklch(61.8% 0.14 152.3)
-
Step 600
600
#008A46
oklch(55.5% 0.145 152.3)
-
Step 700
700
#00743A
oklch(49% 0.128 152.4)
-
Step 800
800
#00602E
oklch(42.8% 0.113 152)
-
Step 900
900
#0C4F28
oklch(37.7% 0.092 152.2)
-
Step 950
950
#0B2E18
oklch(26.9% 0.057 152.6)
#309D5A 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) | #9D9055 | 0.120 |
| Deuteranopia (no green cones) | #90865F | 0.119 |
| Tritanopia (no blue cones) | #009B8D | 0.074 |
| Achromatopsia (no color) | #8A8A8A | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309D5A
#309D5A
oklch(61.8% 0.14 152.3)
- #B663AA
#B663AA
oklch(61.9% 0.14 332.7)
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 #309D5A, closest first.
No curated palette has a color within ΔE 0.04 of #309D5A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.037
- Muted Green #5FA052 ΔE 0.039
- Ocean Green #3D9973 ΔE 0.042
- Viridian #1E9167 ΔE 0.047
- Mid Green #50A747 ΔE 0.047
- Flat Green #699D4C ΔE 0.047
- Seaweed Green #35AD6B ΔE 0.048
Use #309D5A 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.