#009E51
Closest named color: Kelley Green (#009337). oklch(61.3% 0.16 152.3), rgb(0, 158, 81).
Aa
Black text reads best on this color (6.00:1).
About this color
#009E51 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.160 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.038 away. Black text reads best on it, at 6.00:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 6.00:1 |
| White text | 3.49:1 |
Values
| HEX | #009E51 |
| RGB | rgb(0, 158, 81) |
| HSL | hsl(151, 100%, 31%) |
| OKLCH | oklch(61.3% 0.16 152.3) |
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 #009E51 | 3.49:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #009E51 | 6.00:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #009E51 text on white | 3.49:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #009E51 text on black | 6.00:1 | AA | Lc -39.9 | 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
#F1F8F2
oklch(97.2% 0.011 149.9)
-
Step 100
100
#DFEFE3
oklch(93.7% 0.023 153.4)
-
Step 200
200
#C5E2CB
oklch(88.5% 0.044 151.5)
-
Step 300
300
#9BD0A8
oklch(81% 0.079 151.9)
-
Step 400
400
#5DB779
oklch(70.7% 0.126 152.1)
-
Step 500
500 (this color)
#009E51
oklch(61.3% 0.16 152.3)
-
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
#005026
oklch(37.8% 0.099 152.3)
-
Step 950
950
#042F15
oklch(26.9% 0.066 152)
#009E51 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) | #9E904B | 0.135 |
| Deuteranopia (no green cones) | #8F8557 | 0.134 |
| Tritanopia (no blue cones) | #009C8C | 0.085 |
| Achromatopsia (no color) | #898989 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #009E51
#009E51
oklch(61.3% 0.16 152.3)
- #BA5AAE
#BA5AAE
oklch(61.3% 0.161 332.3)
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 #009E51, closest first.
No curated palette has a color within ΔE 0.04 of #009E51.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.038
- Irish Green #019529 ΔE 0.043
- Jade #1FA774 ΔE 0.049
- Grass Green #3F9B0B ΔE 0.049
- Mid Green #50A747 ΔE 0.049
- Light Forest Green #4F9153 ΔE 0.051
- Grassy Green #419C03 ΔE 0.052
- Muted Green #5FA052 ΔE 0.053
Use #009E51 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.