#1F9951
Closest named color: Kelley Green (#009337). oklch(60.2% 0.149 151.7), rgb(31, 153, 81).
Aa
Black text reads best on this color (5.73:1).
About this color
#1F9951 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.149 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 0.033 away. Black text reads best on it, at 5.73:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #1F9951 |
| RGB | rgb(31, 153, 81) |
| HSL | hsl(145, 66%, 36%) |
| OKLCH | oklch(60.2% 0.149 151.7) |
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 #1F9951 | 3.66:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #1F9951 | 5.73:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #1F9951 text on white | 3.66:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #1F9951 text on black | 5.73:1 | AA | Lc -37.9 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE3
oklch(93.6% 0.021 152.2)
-
Step 200
200
#C6E1CC
oklch(88.4% 0.04 152.1)
-
Step 300
300
#9ECFA9
oklch(81% 0.074 151.3)
-
Step 400
400
#64B57C
oklch(70.6% 0.116 152)
-
Step 500
500 (this color)
#1F9951
oklch(60.2% 0.149 151.7)
-
Step 600
600
#008A44
oklch(55.5% 0.147 151.7)
-
Step 700
700
#007538
oklch(49.2% 0.131 151.5)
-
Step 800
800
#00602D
oklch(42.8% 0.114 151.6)
-
Step 900
900
#054F26
oklch(37.6% 0.096 152)
-
Step 950
950
#092F16
oklch(27.1% 0.062 151)
#1F9951 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) | #998B4B | 0.125 |
| Deuteranopia (no green cones) | #8C8256 | 0.124 |
| Tritanopia (no blue cones) | #009788 | 0.079 |
| Achromatopsia (no color) | #868686 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F9951
#1F9951
oklch(60.2% 0.149 151.7)
- #B25BA8
#B25BA8
oklch(60.1% 0.149 331.7)
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 #1F9951, closest first.
No curated palette has a color within ΔE 0.04 of #1F9951.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.033
- Light Forest Green #4F9153 ΔE 0.038
- Irish Green #019529 ΔE 0.042
- Fern Green #548D44 ΔE 0.043
- Viridian #1E9167 ΔE 0.044
- Sea Green #2E8B57 ΔE 0.046
- Ocean Green #3D9973 ΔE 0.052
- Muted Green #5FA052 ΔE 0.053
Use #1F9951 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.