#40A88E
Closest named color: Greeny Blue (#42B395). oklch(66.4% 0.104 173.6), rgb(64, 168, 142).
Aa
Black text reads best on this color (7.20:1).
About this color
#40A88E is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.104 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.032 away. Black text reads best on it, at 7.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #40A88E |
| RGB | rgb(64, 168, 142) |
| HSL | hsl(165, 45%, 45%) |
| OKLCH | oklch(66.4% 0.104 173.6) |
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 #40A88E | 2.91:1 | Fails | Lc -60.5 | Content text, not long reading |
| Black text on #40A88E | 7.20:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #40A88E text on white | 2.91:1 | Fails | Lc 55.2 | Large or bold text, headings |
| #40A88E text on black | 7.20:1 | AAA | Lc -46.6 | 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 500.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C7E0D7
oklch(88.6% 0.029 172)
-
Step 300
300
#A0CCBE
oklch(81% 0.05 173.6)
-
Step 400
400
#67B19C
oklch(70.6% 0.081 173.7)
-
Step 500
500 (this color)
#40A88E
oklch(66.4% 0.104 173.6)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
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
#0A4D3E
oklch(37.7% 0.068 173)
-
Step 950
950
#0B2D25
oklch(27% 0.042 174.6)
#40A88E 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) | #A39E8D | 0.108 |
| Deuteranopia (no green cones) | #949390 | 0.103 |
| Tritanopia (no blue cones) | #00AAA0 | 0.029 |
| Achromatopsia (no color) | #979797 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A88E
#40A88E
oklch(66.4% 0.104 173.6)
- #C57898
#C57898
oklch(66.4% 0.104 353.8)
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 #40A88E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.032
- Dull Teal #5F9E8F ΔE 0.037
- Persian Green #2A9D8F ΔE 0.038
- Tea #65AB7C ΔE 0.040
- Grey Teal #5E9B8A ΔE 0.041
- Light Sea Green #20B2AA ΔE 0.041
- Jade #1FA774 ΔE 0.043
- Dark Seafoam Green #3EAF76 ΔE 0.045
Use #40A88E 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.