#435F63
Closest named color: Slate (#516572). oklch(46.5% 0.034 207.1), rgb(67, 95, 99).
Aa
White text reads best on this color (6.87:1).
About this color
#435F63 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.034 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.035 away. White text reads best on it, at 6.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #435F63 |
| RGB | rgb(67, 95, 99) |
| HSL | hsl(188, 19%, 33%) |
| OKLCH | oklch(46.5% 0.034 207.1) |
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 #435F63 | 6.87:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #435F63 | 3.05:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #435F63 text on white | 6.87:1 | AA | Lc 83.7 | Fine for body text |
| #435F63 text on black | 3.05:1 | AA large text | Lc -18.2 | 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
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B5C4C6
oklch(80.9% 0.017 206.4)
-
Step 400
400
#8FA6A9
oklch(70.8% 0.026 206.2)
-
Step 500
500
#729094
oklch(63.2% 0.034 206.3)
-
Step 600
600
#5B7A7E
oklch(55.7% 0.036 206)
-
Step 700
700 (this color)
#435F63
oklch(46.5% 0.034 207.1)
-
Step 800
800
#3D5457
oklch(42.8% 0.028 206.1)
-
Step 900
900
#344547
oklch(37.7% 0.022 205.2)
-
Step 950
950
#1F282A
oklch(26.9% 0.013 212.7)
#435F63 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) | #5B5D63 | 0.034 |
| Deuteranopia (no green cones) | #555863 | 0.031 |
| Tritanopia (no blue cones) | #386160 | 0.016 |
| Achromatopsia (no color) | #5A5A5A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #435F63
#435F63
oklch(46.5% 0.034 207.1)
- #6B524F
#6B524F
oklch(46.4% 0.034 26.3)
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 #435F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.045
- Dark Aqua #05696B ΔE 0.047
- Petrol #005F6A ΔE 0.047
- Dusty Grape #545775 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.062
- Denim #3B638C ΔE 0.065
Use #435F63 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.