#40C38A
Closest named color: Greenblue (#23C48B). oklch(73.2% 0.141 160.6), rgb(64, 195, 138).
Aa
Black text reads best on this color (9.39:1).
About this color
#40C38A is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.141 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.011 away. Black text reads best on it, at 9.39:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #40C38A |
| RGB | rgb(64, 195, 138) |
| HSL | hsl(154, 52%, 51%) |
| OKLCH | oklch(73.2% 0.141 160.6) |
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 #40C38A | 2.23:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #40C38A | 9.39:1 | AAA | Lc 60.3 | Content text, not long reading |
| #40C38A text on white | 2.23:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #40C38A text on black | 9.39:1 | AAA | Lc -58.5 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DCEFE4
oklch(93.5% 0.025 160.6)
-
Step 200
200
#BEE4CE
oklch(88.6% 0.05 159.8)
-
Step 300
300
#8CD3AE
oklch(81% 0.089 160.8)
-
Step 400
400 (this color)
#40C38A
oklch(73.2% 0.141 160.6)
-
Step 500
500
#00A36C
oklch(63.2% 0.142 160.5)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005E3D
oklch(42.6% 0.095 160.9)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#40C38A 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) | #C0B587 | 0.133 |
| Deuteranopia (no green cones) | #AFA88E | 0.131 |
| Tritanopia (no blue cones) | #00C2B4 | 0.060 |
| Achromatopsia (no color) | #ADADAD | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40C38A
#40C38A
oklch(73.2% 0.141 160.6)
- #E383C3
#E383C3
oklch(73.3% 0.141 340.8)
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 #40C38A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.011
- Green Blue #01C08D ΔE 0.022
- Dark Mint #48C072 ΔE 0.029
- Dark Mint Green #20C073 ΔE 0.035
- Soft Green #6FC276 ΔE 0.037
- Algae Green #21C36F ΔE 0.040
- Dark Seafoam #1FB57A ΔE 0.047
- Medium Sea Green #3CB371 ΔE 0.050
Use #40C38A 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.