#455C63
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.03 218.4), rgb(69, 92, 99).
Aa
White text reads best on this color (7.08:1).
About this color
#455C63 is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is YInMn Blue (#415A77), ΔE 0.036 away. White text reads best on it, at 7.08:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #455C63 |
| RGB | rgb(69, 92, 99) |
| HSL | hsl(194, 18%, 33%) |
| OKLCH | oklch(45.9% 0.03 218.4) |
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 #455C63 | 7.08:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #455C63 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #455C63 text on white | 7.08:1 | AAA | Lc 84.6 | Fine for body text |
| #455C63 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B5C4C8
oklch(81% 0.017 215.5)
-
Step 400
400
#8EA5AC
oklch(70.7% 0.028 218.1)
-
Step 500
500
#728F98
oklch(63.1% 0.035 218.7)
-
Step 600
600
#5A7983
oklch(55.6% 0.039 219.7)
-
Step 700
700
#49666F
oklch(49.1% 0.037 219)
-
Step 800
800 (this color)
#455C63
oklch(45.9% 0.03 218.4)
-
Step 900
900
#34454A
oklch(37.8% 0.023 217.7)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#455C63 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) | #575A63 | 0.026 |
| Deuteranopia (no green cones) | #535763 | 0.024 |
| Tritanopia (no blue cones) | #3B5F5E | 0.019 |
| Achromatopsia (no color) | #585858 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455C63
#455C63
oklch(45.9% 0.03 218.4)
- #67524C
#67524C
oklch(45.8% 0.03 36.5)
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 #455C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.036
- Slate #516572 ΔE 0.038
- Dusty Grape #545775 ΔE 0.044
- Petrol #005F6A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.051
- Dark Aqua #05696B ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.058
- Dusk #4E5481 ΔE 0.063
Use #455C63 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.