#40CA9E
Closest named color: Greenblue (#23C48B). oklch(75.4% 0.134 167.5), rgb(64, 202, 158).
Aa
Black text reads best on this color (10.15:1).
About this color
#40CA9E is a medium-light, moderately saturated green. In OKLCH its lightness is 75%, its chroma 0.134 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.033 away. Black text reads best on it, at 10.15:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #40CA9E |
| RGB | rgb(64, 202, 158) |
| HSL | hsl(161, 57%, 52%) |
| OKLCH | oklch(75.4% 0.134 167.5) |
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 #40CA9E | 2.06:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #40CA9E | 10.15:1 | AAA | Lc 64.0 | Content text, not long reading |
| #40CA9E text on white | 2.06:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #40CA9E text on black | 10.15:1 | AAA | Lc -62.4 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DBEFE7
oklch(93.5% 0.024 169.9)
-
Step 200
200
#BDE4D3
oklch(88.6% 0.047 167)
-
Step 300
300
#8AD2B6
oklch(80.8% 0.083 167.8)
-
Step 400
400 (this color)
#40CA9E
oklch(75.4% 0.134 167.5)
-
Step 500
500
#00A27A
oklch(63.2% 0.129 167.5)
-
Step 600
600
#008866
oklch(55.6% 0.113 167.6)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#40CA9E 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) | #C5BC9C | 0.135 |
| Deuteranopia (no green cones) | #B3AFA1 | 0.130 |
| Tritanopia (no blue cones) | #00CBBE | 0.045 |
| Achromatopsia (no color) | #B4B4B4 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CA9E
#40CA9E
oklch(75.4% 0.134 167.5)
- #ED8ABF
#ED8ABF
oklch(75.4% 0.135 347.5)
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 #40CA9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.033
- Medium Aquamarine #66CDAA ΔE 0.033
- Emerald #06D6A0 ΔE 0.034
- Green Blue #01C08D ΔE 0.041
- Soft Green #6FC276 ΔE 0.052
- Dark Mint #48C072 ΔE 0.056
- Seafoam Blue #78D1B6 ΔE 0.059
- Seaweed #18D17B ΔE 0.059
Use #40CA9E 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.