#40A899
Closest named color: Light Sea Green (#20B2AA). oklch(66.7% 0.098 182.1), rgb(64, 168, 153).
Aa
Black text reads best on this color (7.27:1).
About this color
#40A899 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.098 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.032 away. Black text reads best on it, at 7.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.27:1 |
| White text | 2.88:1 |
Values
| HEX | #40A899 |
| RGB | rgb(64, 168, 153) |
| HSL | hsl(171, 45%, 45%) |
| OKLCH | oklch(66.7% 0.098 182.1) |
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 #40A899 | 2.88:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #40A899 | 7.27:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #40A899 text on white | 2.88:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #40A899 text on black | 7.27:1 | AAA | Lc -47.0 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEA
oklch(93.6% 0.014 180.7)
-
Step 200
200
#C7DFDA
oklch(88.4% 0.026 181.8)
-
Step 300
300
#9FCBC3
oklch(80.8% 0.048 182.7)
-
Step 400
400
#67B1A4
oklch(70.8% 0.077 181.5)
-
Step 500
500 (this color)
#40A899
oklch(66.7% 0.098 182.1)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#094C44
oklch(37.6% 0.063 182.5)
-
Step 950
950
#0A2D28
oklch(27.1% 0.041 182)
#40A899 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) | #A19F98 | 0.104 |
| Deuteranopia (no green cones) | #91939A | 0.099 |
| Tritanopia (no blue cones) | #00ABA3 | 0.022 |
| Achromatopsia (no color) | #989898 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A899
#40A899
oklch(66.7% 0.098 182.1)
- #C67A90
#C67A90
oklch(66.6% 0.098 1.4)
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 #40A899, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.032
- Dull Teal #5F9E8F ΔE 0.033
- Greeny Blue #42B395 ΔE 0.035
- Persian Green #2A9D8F ΔE 0.037
- Grey Teal #5E9B8A ΔE 0.040
- Cadet Blue #5F9EA0 ΔE 0.041
- Sea #3C9992 ΔE 0.044
- Blue Green #0F9B8E ΔE 0.048
Use #40A899 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.