#435C66
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.034 224.5), rgb(67, 92, 102).
Aa
White text reads best on this color (7.09:1).
About this color
#435C66 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.034 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 7.09:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.96:1 |
| White text | 7.09:1 |
Values
| HEX | #435C66 |
| RGB | rgb(67, 92, 102) |
| HSL | hsl(197, 21%, 33%) |
| OKLCH | oklch(45.9% 0.034 224.5) |
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 #435C66 | 7.09:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #435C66 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #435C66 text on white | 7.09:1 | AAA | Lc 84.6 | Fine for body text |
| #435C66 text on black | 2.96:1 | Fails | Lc -17.4 | 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 800.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C4CA
oklch(81% 0.019 222.2)
-
Step 400
400
#8CA5B0
oklch(70.6% 0.032 226.2)
-
Step 500
500
#6F8F9C
oklch(63% 0.041 224.7)
-
Step 600
600
#577987
oklch(55.5% 0.044 225.4)
-
Step 700
700
#476672
oklch(49.1% 0.041 224)
-
Step 800
800 (this color)
#435C66
oklch(45.9% 0.034 224.5)
-
Step 900
900
#32454C
oklch(37.7% 0.027 222.6)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#435C66 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) | #565B67 | 0.027 |
| Deuteranopia (no green cones) | #515666 | 0.026 |
| Tritanopia (no blue cones) | #375F5F | 0.023 |
| Achromatopsia (no color) | #585858 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #435C66
#435C66
oklch(45.9% 0.034 224.5)
- #685248
#685248
oklch(45.8% 0.034 45.7)
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 #435C66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Slate #516572 ΔE 0.037
- Dusty Grape #545775 ΔE 0.041
- Petrol #005F6A ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.052
- Dark Aqua #05696B ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.058
- Dusk #4E5481 ΔE 0.059
Use #435C66 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.