#406F75
Closest named color: Slate (#516572). oklch(51.1% 0.052 206.1), rgb(64, 111, 117).
Aa
White text reads best on this color (5.60:1).
About this color
#406F75 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.052 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.033 away. White text reads best on it, at 5.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #406F75 |
| RGB | rgb(64, 111, 117) |
| HSL | hsl(187, 29%, 35%) |
| OKLCH | oklch(51.1% 0.052 206.1) |
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 #406F75 | 5.60:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #406F75 | 3.74:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #406F75 text on white | 5.60:1 | AA | Lc 77.9 | Fine for body text |
| #406F75 text on black | 3.74:1 | AA large text | Lc -23.9 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AFC6C9
oklch(81% 0.025 206.2)
-
Step 400
400
#84A8AD
oklch(70.7% 0.04 206.8)
-
Step 500
500
#649399
oklch(63.2% 0.051 206)
-
Step 600
600
#497D84
oklch(55.6% 0.057 206.7)
-
Step 700
700 (this color)
#406F75
oklch(51.1% 0.052 206.1)
-
Step 800
800
#31565B
oklch(42.8% 0.043 206.7)
-
Step 900
900
#2B474A
oklch(37.7% 0.034 204.4)
-
Step 950
950
#1A2A2C
oklch(27.2% 0.022 205.8)
#406F75 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) | #686C75 | 0.051 |
| Deuteranopia (no green cones) | #5F6575 | 0.047 |
| Tritanopia (no blue cones) | #277371 | 0.026 |
| Achromatopsia (no color) | #686868 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406F75
#406F75
oklch(51.1% 0.052 206.1)
- #825B57
#825B57
oklch(51.1% 0.052 25.6)
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 #406F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.036
- Deep Aqua #08787F ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.038
- Bluegreen #017A79 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.045
- Dark Aqua #05696B ΔE 0.047
- Ocean #017B92 ΔE 0.053
Use #406F75 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.