#40A8A0
Closest named color: Light Sea Green (#20B2AA). oklch(67% 0.096 188), rgb(64, 168, 160).
Aa
Black text reads best on this color (7.32:1).
About this color
#40A8A0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.096 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.029 away. Black text reads best on it, at 7.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.32:1 |
| White text | 2.86:1 |
Values
| HEX | #40A8A0 |
| RGB | rgb(64, 168, 160) |
| HSL | hsl(175, 45%, 45%) |
| OKLCH | oklch(67% 0.096 188) |
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 #40A8A0 | 2.86:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #40A8A0 | 7.32:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #40A8A0 text on white | 2.86:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #40A8A0 text on black | 7.32:1 | AAA | Lc -47.3 | 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
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DEEEEC
oklch(93.7% 0.017 187.9)
-
Step 200
200
#C2E1DD
oklch(88.6% 0.033 187.1)
-
Step 300
300
#94CEC8
oklch(81% 0.06 188)
-
Step 400
400 (this color)
#40A8A0
oklch(67% 0.096 188)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004D48
oklch(37.8% 0.066 187.3)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#40A8A0 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) | #9F9FA0 | 0.101 |
| Deuteranopia (no green cones) | #8F94A1 | 0.095 |
| Tritanopia (no blue cones) | #00ACA5 | 0.021 |
| Achromatopsia (no color) | #999999 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A8A0
#40A8A0
oklch(67% 0.096 188)
- #C87C8A
#C87C8A
oklch(67% 0.096 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 #40A8A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.029
- Dull Teal #5F9E8F ΔE 0.035
- Cadet Blue #5F9EA0 ΔE 0.036
- Persian Green #2A9D8F ΔE 0.041
- Greeny Blue #42B395 ΔE 0.041
- Grey Teal #5E9B8A ΔE 0.043
- Sea #3C9992 ΔE 0.044
- Blue Green #0F9B8E ΔE 0.051
Use #40A8A0 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.