#40A7AE
Closest named color: Cadet Blue (#5F9EA0). oklch(67.2% 0.094 201.5), rgb(64, 167, 174).
Aa
Black text reads best on this color (7.35:1).
About this color
#40A7AE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.094 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.033 away. Black text reads best on it, at 7.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #40A7AE |
| RGB | rgb(64, 167, 174) |
| HSL | hsl(184, 46%, 47%) |
| OKLCH | oklch(67.2% 0.094 201.5) |
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 #40A7AE | 2.85:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #40A7AE | 7.35:1 | AAA | Lc 49.6 | Large or bold text, headings |
| #40A7AE text on white | 2.85:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #40A7AE text on black | 7.35:1 | AAA | Lc -47.4 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDEE
oklch(93.5% 0.016 201.7)
-
Step 200
200
#C1E0E2
oklch(88.5% 0.033 201.3)
-
Step 300
300
#94CCD0
oklch(80.8% 0.058 201.6)
-
Step 400
400 (this color)
#40A7AE
oklch(67.2% 0.094 201.5)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#40A7AE 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) | #9BA0AF | 0.095 |
| Deuteranopia (no green cones) | #8A94AF | 0.087 |
| Tritanopia (no blue cones) | #00ADA9 | 0.028 |
| Achromatopsia (no color) | #999999 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A7AE
#40A7AE
oklch(67.2% 0.094 201.5)
- #C97E7C
#C97E7C
oklch(67.1% 0.094 21.5)
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 #40A7AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.036
- Turquoise Blue #06B1C4 ΔE 0.037
- Dull Teal #5F9E8F ΔE 0.047
- Sea #3C9992 ΔE 0.051
- Persian Green #2A9D8F ΔE 0.053
- Greyblue #77A1B5 ΔE 0.054
- Grey Teal #5E9B8A ΔE 0.054
Use #40A7AE 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.