#5B9740
Closest named color: Flat Green (#699D4C). oklch(61.5% 0.136 137), rgb(91, 151, 64).
Aa
Black text reads best on this color (5.94:1).
About this color
#5B9740 is a medium-dark, moderately saturated green. In OKLCH its lightness is 62%, its chroma 0.136 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.027 away. Black text reads best on it, at 5.94:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #5B9740 |
| RGB | rgb(91, 151, 64) |
| HSL | hsl(101, 40%, 42%) |
| OKLCH | oklch(61.5% 0.136 137) |
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 #5B9740 | 3.53:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #5B9740 | 5.94:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #5B9740 text on white | 3.53:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #5B9740 text on black | 5.94:1 | AA | Lc -39.0 | 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 500.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE1
oklch(93.6% 0.019 137.8)
-
Step 200
200
#CEDFC8
oklch(88.5% 0.036 137.5)
-
Step 300
300
#ADCBA1
oklch(80.9% 0.066 136.8)
-
Step 400
400
#81B06D
oklch(70.7% 0.106 136.7)
-
Step 500
500 (this color)
#5B9740
oklch(61.5% 0.136 137)
-
Step 600
600
#458623
oklch(55.6% 0.147 137)
-
Step 700
700
#367114
oklch(49% 0.137 137)
-
Step 800
800
#2D5C15
oklch(42.6% 0.113 137.2)
-
Step 900
900
#294C19
oklch(37.7% 0.088 137.1)
-
Step 950
950
#192D10
oklch(27.2% 0.056 136.9)
#5B9740 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) | #9C8C37 | 0.087 |
| Deuteranopia (no green cones) | #938646 | 0.087 |
| Tritanopia (no blue cones) | #589284 | 0.095 |
| Achromatopsia (no color) | #888888 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9740
#5B9740
oklch(61.5% 0.136 137)
- #A568BA
#A568BA
oklch(61.4% 0.136 317)
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 #5B9740, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.027
- Muted Green #5FA052 ΔE 0.029
- Olive Drab #6B8E23 ΔE 0.030
- Fern Green #548D44 ΔE 0.033
- Light Forest Green #4F9153 ΔE 0.033
- Moss Green #658B38 ΔE 0.034
- Mossy Green #638B27 ΔE 0.034
- Dark Yellow Green #728F02 ΔE 0.038
Use #5B9740 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.