#455D5D
Closest named color: Slate (#516572). oklch(45.9% 0.029 196.2), rgb(69, 93, 93).
Aa
White text reads best on this color (7.05:1).
About this color
#455D5D is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.042 away. White text reads best on it, at 7.05:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #455D5D |
| RGB | rgb(69, 93, 93) |
| HSL | hsl(180, 15%, 32%) |
| OKLCH | oklch(45.9% 0.029 196.2) |
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 #455D5D | 7.05:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #455D5D | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #455D5D text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #455D5D text on black | 2.97:1 | Fails | Lc -17.5 | 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 800.
-
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
#D2DBDB
oklch(88.5% 0.01 197)
-
Step 300
300
#B5C4C4
oklch(80.9% 0.016 196.8)
-
Step 400
400
#8EA6A6
oklch(70.7% 0.027 196.6)
-
Step 500
500
#729090
oklch(63% 0.034 196.3)
-
Step 600
600
#5A7A7A
oklch(55.5% 0.037 196.1)
-
Step 700
700
#496767
oklch(49% 0.035 196.1)
-
Step 800
800 (this color)
#455D5D
oklch(45.9% 0.029 196.2)
-
Step 900
900
#344545
oklch(37.6% 0.022 196.3)
-
Step 950
950
#1E2929
oklch(27.1% 0.015 196.3)
#455D5D 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) | #5A5B5D | 0.030 |
| Deuteranopia (no green cones) | #55575D | 0.028 |
| Tritanopia (no blue cones) | #3D5F5D | 0.011 |
| Achromatopsia (no color) | #595959 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455D5D
#455D5D
oklch(45.9% 0.029 196.2)
- #675152
#675152
oklch(45.8% 0.03 15.2)
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 #455D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.047
- Petrol #005F6A ΔE 0.051
- Dark Aqua #05696B ΔE 0.052
- Dusty Grape #545775 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.057
- Deep Teal #00555A ΔE 0.065
Use #455D5D 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.