#1FBF63
Closest named color: Algae Green (#21C36F). oklch(70.7% 0.181 151.4), rgb(31, 191, 99).
Aa
Black text reads best on this color (8.69:1).
About this color
#1FBF63 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.181 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.016 away. Black text reads best on it, at 8.69:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 8.69:1 |
| White text | 2.41:1 |
Values
| HEX | #1FBF63 |
| RGB | rgb(31, 191, 99) |
| HSL | hsl(145, 72%, 44%) |
| OKLCH | oklch(70.7% 0.181 151.4) |
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 #1FBF63 | 2.41:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #1FBF63 | 8.69:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #1FBF63 text on white | 2.41:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #1FBF63 text on black | 8.69:1 | AAA | Lc -55.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF9F0
oklch(97.2% 0.016 148.4)
-
Step 100
100
#DBF1DF
oklch(93.7% 0.033 150.8)
-
Step 200
200
#BCE6C5
oklch(88.6% 0.063 151.4)
-
Step 300
300
#87D69C
oklch(81% 0.113 151.7)
-
Step 400
400 (this color)
#1FBF63
oklch(70.7% 0.181 151.4)
-
Step 500
500
#00A551
oklch(63.2% 0.169 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
Step 700
700
#007538
oklch(49.2% 0.131 151.5)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#1FBF63 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) | #C0AE5C | 0.152 |
| Deuteranopia (no green cones) | #AEA26A | 0.149 |
| Tritanopia (no blue cones) | #00BCA9 | 0.097 |
| Achromatopsia (no color) | #A7A7A7 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1FBF63
#1FBF63
oklch(70.7% 0.181 151.4)
- #DF71D3
#DF71D3
oklch(70.8% 0.18 331.5)
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 #1FBF63, closest first.
No curated palette has a color within ΔE 0.04 of #1FBF63.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.016
- Dark Mint Green #20C073 ΔE 0.019
- Cool Green #33B864 ΔE 0.021
- Shamrock Green #02C14D ΔE 0.027
- Dark Mint #48C072 ΔE 0.029
- Shamrock #01B44C ΔE 0.038
- Leafy Green #51B73B ΔE 0.039
- Green Teal #0CB577 ΔE 0.044
Use #1FBF63 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.