#40D0A2
Closest named color: Emerald (#06D6A0). oklch(77% 0.139 167.3), rgb(64, 208, 162).
Aa
Black text reads best on this color (10.76:1).
About this color
#40D0A2 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.139 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.022 away. Black text reads best on it, at 10.76:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.76:1 |
| White text | 1.95:1 |
Values
| HEX | #40D0A2 |
| RGB | rgb(64, 208, 162) |
| HSL | hsl(161, 61%, 53%) |
| OKLCH | oklch(77% 0.139 167.3) |
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 #40D0A2 | 1.95:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #40D0A2 | 10.76:1 | AAA | Lc 66.8 | Content text, not long reading |
| #40D0A2 text on white | 1.95:1 | Fails | Lc 37.1 | Non-text elements, placeholder text |
| #40D0A2 text on black | 10.76:1 | AAA | Lc -65.3 | 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 300.
-
Step 50
50
#EAFAF3
oklch(97.1% 0.019 167.9)
-
Step 100
100
#D1F3E4
oklch(93.6% 0.041 167)
-
Step 200
200
#A7EACF
oklch(88.5% 0.077 167.7)
-
Step 300
300 (this color)
#40D0A2
oklch(77% 0.139 167.3)
-
Step 400
400
#00BC8E
oklch(70.6% 0.144 167.5)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
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)
#40D0A2 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) | #CBC2A0 | 0.139 |
| Deuteranopia (no green cones) | #B8B4A5 | 0.134 |
| Tritanopia (no blue cones) | #00D1C3 | 0.046 |
| Achromatopsia (no color) | #BABABA | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40D0A2
#40D0A2
oklch(77% 0.139 167.3)
- #F48EC5
#F48EC5
oklch(77.1% 0.139 347.3)
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 #40D0A2, closest first.
No curated palette has a color within ΔE 0.04 of #40D0A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.022
- Medium Aquamarine #66CDAA ΔE 0.030
- Greenblue #23C48B ΔE 0.045
- Seafoam Blue #78D1B6 ΔE 0.052
- Green Blue #01C08D ΔE 0.055
- Seaweed #18D17B ΔE 0.057
- Soft Green #6FC276 ΔE 0.058
- Aqua Green #12E193 ΔE 0.059
Use #40D0A2 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.