#40B1AA
Closest named color: Light Sea Green (#20B2AA). oklch(69.5% 0.101 189.3), rgb(64, 177, 170).
Aa
Black text reads best on this color (8.08:1).
About this color
#40B1AA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.101 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.014 away. Black text reads best on it, at 8.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.08:1 |
| White text | 2.59:1 |
Values
| HEX | #40B1AA |
| RGB | rgb(64, 177, 170) |
| HSL | hsl(176, 47%, 47%) |
| OKLCH | oklch(69.5% 0.101 189.3) |
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 #40B1AA | 2.59:1 | Fails | Lc -55.5 | Large or bold text, headings |
| Black text on #40B1AA | 8.08:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #40B1AA text on white | 2.59:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #40B1AA text on black | 8.08:1 | AAA | Lc -51.5 | 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
#EFF7F6
oklch(97% 0.009 188.1)
-
Step 100
100
#DDEEEC
oklch(93.6% 0.018 188.4)
-
Step 200
200
#C0E1DE
oklch(88.5% 0.035 189.8)
-
Step 300
300
#91CEC9
oklch(80.9% 0.063 189.6)
-
Step 400
400 (this color)
#40B1AA
oklch(69.5% 0.101 189.3)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#40B1AA 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) | #A7A8AA | 0.107 |
| Deuteranopia (no green cones) | #969BAB | 0.101 |
| Tritanopia (no blue cones) | #00B5AF | 0.020 |
| Achromatopsia (no color) | #A1A1A1 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B1AA
#40B1AA
oklch(69.5% 0.101 189.3)
- #D3828F
#D3828F
oklch(69.5% 0.101 9.6)
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 #40B1AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.014
- Topaz #13BBAF ΔE 0.029
- Greeny Blue #42B395 ΔE 0.033
- Turquoise Blue #06B1C4 ΔE 0.041
- Cadet Blue #5F9EA0 ΔE 0.054
- Dull Teal #5F9E8F ΔE 0.056
- Tea #65AB7C ΔE 0.063
- Grey Teal #5E9B8A ΔE 0.065
Use #40B1AA 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.