#40BF83
Closest named color: Greenblue (#23C48B). oklch(72% 0.142 158.8), rgb(64, 191, 131).
Aa
Black text reads best on this color (8.99:1).
About this color
#40BF83 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.142 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.016 away. Black text reads best on it, at 8.99:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 8.99:1 |
| White text | 2.33:1 |
Values
| HEX | #40BF83 |
| RGB | rgb(64, 191, 131) |
| HSL | hsl(152, 50%, 50%) |
| OKLCH | oklch(72% 0.142 158.8) |
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 #40BF83 | 2.33:1 | Fails | Lc -50.5 | Large or bold text, headings |
| Black text on #40BF83 | 8.99:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #40BF83 text on white | 2.33:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #40BF83 text on black | 8.99:1 | AAA | Lc -56.4 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCEFE4
oklch(93.5% 0.025 160.6)
-
Step 200
200
#BFE4CD
oklch(88.6% 0.05 157.9)
-
Step 300
300
#8ED3AC
oklch(81% 0.089 158.8)
-
Step 400
400 (this color)
#40BF83
oklch(72% 0.142 158.8)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#40BF83 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) | #BDB17F | 0.132 |
| Deuteranopia (no green cones) | #ADA587 | 0.129 |
| Tritanopia (no blue cones) | #00BEAF | 0.063 |
| Achromatopsia (no color) | #AAAAAA | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BF83
#40BF83
oklch(72% 0.142 158.8)
- #DD7FC2
#DD7FC2
oklch(71.9% 0.142 338.7)
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 #40BF83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.016
- Green Blue #01C08D ΔE 0.019
- Dark Mint #48C072 ΔE 0.023
- Dark Mint Green #20C073 ΔE 0.028
- Dark Seafoam #1FB57A ΔE 0.035
- Algae Green #21C36F ΔE 0.035
- Medium Sea Green #3CB371 ΔE 0.037
- Green Teal #0CB577 ΔE 0.039
Use #40BF83 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.