#40CC8F
Closest named color: Greenblue (#23C48B). oklch(75.6% 0.149 160.3), rgb(64, 204, 143).
Aa
Black text reads best on this color (10.25:1).
About this color
#40CC8F is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.149 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.028 away. Black text reads best on it, at 10.25:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 10.25:1 |
| White text | 2.04:1 |
Values
| HEX | #40CC8F |
| RGB | rgb(64, 204, 143) |
| HSL | hsl(154, 58%, 53%) |
| OKLCH | oklch(75.6% 0.149 160.3) |
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 #40CC8F | 2.04:1 | Fails | Lc -44.0 | Non-text elements, placeholder text |
| Black text on #40CC8F | 10.25:1 | AAA | Lc 64.4 | Content text, not long reading |
| #40CC8F text on white | 2.04:1 | Fails | Lc 39.5 | Non-text elements, placeholder text |
| #40CC8F text on black | 10.25:1 | AAA | Lc -62.8 | Content text, not long reading |
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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DBF0E4
oklch(93.6% 0.027 160.9)
-
Step 200
200
#BDE4CE
oklch(88.5% 0.051 160.5)
-
Step 300
300
#89D4AC
oklch(81% 0.094 160)
-
Step 400
400 (this color)
#40CC8F
oklch(75.6% 0.149 160.3)
-
Step 500
500
#00A36B
oklch(63.1% 0.143 160.1)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#40CC8F 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) | #C9BD8B | 0.140 |
| Deuteranopia (no green cones) | #B7B093 | 0.136 |
| Tritanopia (no blue cones) | #00CBBC | 0.063 |
| Achromatopsia (no color) | #B5B5B5 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CC8F
#40CC8F
oklch(75.6% 0.149 160.3)
- #ED88CD
#ED88CD
oklch(75.6% 0.148 340.1)
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 #40CC8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.028
- Emerald #06D6A0 ΔE 0.030
- Seaweed #18D17B ΔE 0.037
- Soft Green #6FC276 ΔE 0.040
- Dark Mint #48C072 ΔE 0.042
- Green Blue #01C08D ΔE 0.042
- Algae Green #21C36F ΔE 0.048
- Medium Aquamarine #66CDAA ΔE 0.048
Use #40CC8F 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.