#01903F
Closest named color: Kelley Green (#009337). oklch(57.1% 0.159 149.5), rgb(1, 144, 63).
Aa
Black text reads best on this color (5.06:1).
About this color
#01903F is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.159 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.014 away. Black text reads best on it, at 5.06:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #01903F |
| RGB | rgb(1, 144, 63) |
| HSL | hsl(146, 99%, 28%) |
| OKLCH | oklch(57.1% 0.159 149.5) |
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 #01903F | 4.14:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #01903F | 5.06:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #01903F text on white | 4.14:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #01903F text on black | 5.06:1 | AA | Lc -33.8 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE3
oklch(93.6% 0.02 150.1)
-
Step 200
200
#C8E1CB
oklch(88.5% 0.04 148.7)
-
Step 300
300
#A1CEA8
oklch(80.9% 0.071 149.2)
-
Step 400
400
#6AB479
oklch(70.6% 0.114 149.3)
-
Step 500
500
#39A156
oklch(63.1% 0.146 149.4)
-
Step 600
600 (this color)
#01903F
oklch(57.1% 0.159 149.5)
-
Step 700
700
#007532
oklch(49.1% 0.137 149.6)
-
Step 800
800
#006027
oklch(42.7% 0.12 149.3)
-
Step 900
900
#0F4F24
oklch(37.7% 0.095 149.6)
-
Step 950
950
#0C2E15
oklch(26.9% 0.06 149.3)
#01903F 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) | #918237 | 0.129 |
| Deuteranopia (no green cones) | #837945 | 0.126 |
| Tritanopia (no blue cones) | #008D7E | 0.091 |
| Achromatopsia (no color) | #7C7C7C | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01903F
#01903F
oklch(57.1% 0.159 149.5)
- #A94FA4
#A94FA4
oklch(57.1% 0.159 329.6)
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 #01903F, closest first.
No curated palette has a color within ΔE 0.04 of #01903F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.014
- Forest Green #228B22 ΔE 0.025
- Emerald Green #028F1E ΔE 0.028
- Irish Green #019529 ΔE 0.029
- Sea Green #2E8B57 ΔE 0.042
- True Green #089404 ΔE 0.043
- Jungle Green #048243 ΔE 0.045
- Fern Green #548D44 ΔE 0.048
Use #01903F 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.