#40B396
Closest named color: Greeny Blue (#42B395). oklch(69.4% 0.112 173), rgb(64, 179, 150).
Aa
Black text reads best on this color (8.10:1).
About this color
#40B396 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.112 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.002 away. Black text reads best on it, at 8.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.10:1 |
| White text | 2.59:1 |
Values
| HEX | #40B396 |
| RGB | rgb(64, 179, 150) |
| HSL | hsl(165, 47%, 48%) |
| OKLCH | oklch(69.4% 0.112 173) |
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 #40B396 | 2.59:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #40B396 | 8.10:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #40B396 text on white | 2.59:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #40B396 text on black | 8.10:1 | AAA | Lc -51.6 | 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
#F0F8F5
oklch(97.2% 0.009 171.8)
-
Step 100
100
#DDEFE8
oklch(93.7% 0.021 170.6)
-
Step 200
200
#C0E2D7
oklch(88.5% 0.039 173.8)
-
Step 300
300
#91D0BC
oklch(80.9% 0.07 172.7)
-
Step 400
400 (this color)
#40B396
oklch(69.4% 0.112 173)
-
Step 500
500
#00A182
oklch(63.2% 0.122 172.6)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#40B396 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) | #ADA895 | 0.115 |
| Deuteranopia (no green cones) | #9D9C98 | 0.111 |
| Tritanopia (no blue cones) | #00B5AA | 0.030 |
| Achromatopsia (no color) | #A1A1A1 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B396
#40B396
oklch(69.4% 0.112 173)
- #D27FA3
#D27FA3
oklch(69.5% 0.111 352.9)
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 #40B396, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.002
- Light Sea Green #20B2AA ΔE 0.032
- Topaz #13BBAF ΔE 0.036
- Tea #65AB7C ΔE 0.040
- Dark Seafoam Green #3EAF76 ΔE 0.043
- Bluey Green #2BB179 ΔE 0.044
- Green Blue #01C08D ΔE 0.046
- Dark Seafoam #1FB57A ΔE 0.047
Use #40B396 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.