#406E78
Closest named color: Slate (#516572). oklch(50.9% 0.053 213.1), rgb(64, 110, 120).
Aa
White text reads best on this color (5.64:1).
About this color
#406E78 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.053 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.030 away. White text reads best on it, at 5.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #406E78 |
| RGB | rgb(64, 110, 120) |
| HSL | hsl(191, 30%, 36%) |
| OKLCH | oklch(50.9% 0.053 213.1) |
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 #406E78 | 5.64:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #406E78 | 3.71:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #406E78 text on white | 5.64:1 | AA | Lc 78.1 | Fine for body text |
| #406E78 text on black | 3.71:1 | AA large text | Lc -23.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AFC5CA
oklch(80.8% 0.025 212.9)
-
Step 400
400
#84A8B0
oklch(70.8% 0.041 212.8)
-
Step 500
500
#64929C
oklch(63.1% 0.052 212.7)
-
Step 600
600
#4A7C87
oklch(55.5% 0.056 213.3)
-
Step 700
700 (this color)
#406E78
oklch(50.9% 0.053 213.1)
-
Step 800
800
#31555D
oklch(42.6% 0.043 213.5)
-
Step 900
900
#2C464C
oklch(37.6% 0.033 213.8)
-
Step 950
950
#1A292D
oklch(26.9% 0.022 216.2)
#406E78 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) | #666B79 | 0.049 |
| Deuteranopia (no green cones) | #5D6478 | 0.045 |
| Tritanopia (no blue cones) | #257271 | 0.030 |
| Achromatopsia (no color) | #676767 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406E78
#406E78
oklch(50.9% 0.053 213.1)
- #815B52
#815B52
oklch(50.9% 0.052 33.8)
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 #406E78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.030
- Deep Turquoise #017374 ΔE 0.039
- Deep Aqua #08787F ΔE 0.039
- Metallic Blue #4F738E ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.041
- Bluegreen #017A79 ΔE 0.046
- Dark Aqua #05696B ΔE 0.048
- Sea Blue #047495 ΔE 0.051
Use #406E78 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.