#456C63
Closest named color: Slate (#516572). oklch(49.9% 0.047 178.1), rgb(69, 108, 99).
Aa
White text reads best on this color (5.86:1).
About this color
#456C63 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.047 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.041 away. White text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.57:1 |
| White text | 5.86:1 |
Values
| HEX | #456C63 |
| RGB | rgb(69, 108, 99) |
| HSL | hsl(166, 22%, 35%) |
| OKLCH | oklch(49.9% 0.047 178.1) |
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 #456C63 | 5.86:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #456C63 | 3.57:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #456C63 text on white | 5.86:1 | AA | Lc 79.3 | Fine for body text |
| #456C63 text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCD9
oklch(88.5% 0.013 178)
-
Step 300
300
#B2C6C0
oklch(81% 0.023 175.8)
-
Step 400
400
#89A8A0
oklch(70.6% 0.036 177.8)
-
Step 500
500
#6B9389
oklch(63.1% 0.047 177.5)
-
Step 600
600
#527D73
oklch(55.5% 0.05 178.1)
-
Step 700
700 (this color)
#456C63
oklch(49.9% 0.047 178.1)
-
Step 800
800
#37564F
oklch(42.7% 0.039 178.6)
-
Step 900
900
#304742
oklch(37.7% 0.03 179.6)
-
Step 950
950
#1C2A26
oklch(27.1% 0.02 175.1)
#456C63 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) | #696863 | 0.049 |
| Deuteranopia (no green cones) | #626264 | 0.048 |
| Tritanopia (no blue cones) | #396D69 | 0.014 |
| Achromatopsia (no color) | #656565 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #456C63
#456C63
oklch(49.9% 0.047 178.1)
- #7A5863
#7A5863
oklch(50% 0.047 357.8)
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 #456C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.043
- Deep Turquoise #017374 ΔE 0.044
- Dark Aqua #05696B ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.051
- Dim Gray #696969 ΔE 0.051
- Bluegreen #017A79 ΔE 0.053
- Deep Aqua #08787F ΔE 0.054
Use #456C63 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.