#40A184
Closest named color: Persian Green (#2A9D8F). oklch(64.3% 0.101 170.3), rgb(64, 161, 132).
Aa
Black text reads best on this color (6.64:1).
About this color
#40A184 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.101 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.026 away. Black text reads best on it, at 6.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.64:1 |
| White text | 3.15:1 |
Values
| HEX | #40A184 |
| RGB | rgb(64, 161, 132) |
| HSL | hsl(162, 43%, 44%) |
| OKLCH | oklch(64.3% 0.101 170.3) |
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 #40A184 | 3.15:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #40A184 | 6.64:1 | AA | Lc 45.6 | Large or bold text, headings |
| #40A184 text on white | 3.15:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #40A184 text on black | 6.64:1 | AA | Lc -43.3 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C8DFD6
oklch(88.4% 0.027 170.2)
-
Step 300
300
#A1CBBC
oklch(80.8% 0.049 171.2)
-
Step 400
400
#6BB199
oklch(70.7% 0.08 170.1)
-
Step 500
500 (this color)
#40A184
oklch(64.3% 0.101 170.3)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#114D3C
oklch(37.8% 0.067 169.7)
-
Step 950
950
#0D2D23
oklch(27% 0.042 169.5)
#40A184 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) | #9D9783 | 0.104 |
| Deuteranopia (no green cones) | #8F8D86 | 0.100 |
| Tritanopia (no blue cones) | #00A299 | 0.034 |
| Achromatopsia (no color) | #919191 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A184
#40A184
oklch(64.3% 0.101 170.3)
- #BC7396
#BC7396
oklch(64.4% 0.102 350.1)
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 #40A184, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.026
- Ocean Green #3D9973 ΔE 0.030
- Grey Teal #5E9B8A ΔE 0.033
- Blue Green #0F9B8E ΔE 0.035
- Dull Teal #5F9E8F ΔE 0.035
- Sea #3C9992 ΔE 0.037
- Jade #1FA774 ΔE 0.038
- Tea #65AB7C ΔE 0.048
Use #40A184 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.