#455E61
Closest named color: Slate (#516572). oklch(46.3% 0.03 205.4), rgb(69, 94, 97).
Aa
White text reads best on this color (6.93:1).
About this color
#455E61 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.030 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.036 away. White text reads best on it, at 6.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #455E61 |
| RGB | rgb(69, 94, 97) |
| HSL | hsl(186, 17%, 33%) |
| OKLCH | oklch(46.3% 0.03 205.4) |
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 #455E61 | 6.93:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #455E61 | 3.02:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #455E61 text on white | 6.93:1 | AA | Lc 84.0 | Fine for body text |
| #455E61 text on black | 3.02:1 | AA large text | Lc -18.0 | 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
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B6C3C5
oklch(80.8% 0.015 207.9)
-
Step 400
400
#90A5A8
oklch(70.7% 0.024 207.1)
-
Step 500
500
#758F92
oklch(63.1% 0.03 205)
-
Step 600
600
#5D797C
oklch(55.5% 0.033 204.4)
-
Step 700
700 (this color)
#455E61
oklch(46.3% 0.03 205.4)
-
Step 800
800
#3F5356
oklch(42.7% 0.025 207.6)
-
Step 900
900
#364547
oklch(37.8% 0.02 206.3)
-
Step 950
950
#202829
oklch(27% 0.011 205.8)
#455E61 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) | #5A5C61 | 0.030 |
| Deuteranopia (no green cones) | #555861 | 0.028 |
| Tritanopia (no blue cones) | #3C605F | 0.013 |
| Achromatopsia (no color) | #5A5A5A | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455E61
#455E61
oklch(46.3% 0.03 205.4)
- #695350
#695350
oklch(46.4% 0.03 27.3)
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 #455E61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.046
- Petrol #005F6A ΔE 0.050
- Dusty Grape #545775 ΔE 0.050
- Dark Aqua #05696B ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.061
- Dim Gray #696969 ΔE 0.065
Use #455E61 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.