#436366
Closest named color: Slate (#516572). oklch(47.6% 0.037 203.3), rgb(67, 99, 102).
Aa
White text reads best on this color (6.53:1).
About this color
#436366 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.037 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.028 away. White text reads best on it, at 6.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #436366 |
| RGB | rgb(67, 99, 102) |
| HSL | hsl(185, 21%, 33%) |
| OKLCH | oklch(47.6% 0.037 203.3) |
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 #436366 | 6.53:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #436366 | 3.21:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #436366 text on white | 6.53:1 | AA | Lc 82.3 | Fine for body text |
| #436366 text on black | 3.21:1 | AA large text | Lc -19.6 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDC
oklch(88.5% 0.01 204.9)
-
Step 300
300
#B4C4C6
oklch(80.9% 0.018 205.8)
-
Step 400
400
#8CA6A9
oklch(70.6% 0.029 205.1)
-
Step 500
500
#6F9094
oklch(63% 0.037 205.4)
-
Step 600
600
#577B7E
oklch(55.7% 0.041 202.5)
-
Step 700
700 (this color)
#436366
oklch(47.6% 0.037 203.3)
-
Step 800
800
#3B5457
oklch(42.7% 0.031 205.4)
-
Step 900
900
#334647
oklch(37.8% 0.024 200.2)
-
Step 950
950
#1E292A
oklch(27.1% 0.015 203.2)
#436366 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) | #5E6066 | 0.037 |
| Deuteranopia (no green cones) | #585C66 | 0.034 |
| Tritanopia (no blue cones) | #366564 | 0.016 |
| Achromatopsia (no color) | #5E5E5E | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436366
#436366
oklch(47.6% 0.037 203.3)
- #705552
#705552
oklch(47.7% 0.036 25.8)
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 #436366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.028
- Dark Aqua #05696B ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Petrol #005F6A ΔE 0.051
- Dusty Grape #545775 ΔE 0.055
- Deep Turquoise #017374 ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.056
Use #436366 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.