#545C78
Closest named color: Dusty Grape (#545775). oklch(47.9% 0.046 272.2), rgb(84, 92, 120).
Aa
White text reads best on this color (6.60:1).
About this color
#545C78 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.046 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.014 away. White text reads best on it, at 6.60:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.17:1 |
| White text | 6.60:1 |
Values
| HEX | #545C78 |
| RGB | rgb(84, 92, 120) |
| HSL | hsl(227, 18%, 40%) |
| OKLCH | oklch(47.9% 0.046 272.2) |
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 #545C78 | 6.60:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #545C78 | 3.17:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #545C78 text on white | 6.60:1 | AA | Lc 82.7 | Fine for body text |
| #545C78 text on black | 3.17:1 | AA large text | Lc -19.2 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BBC0D0
oklch(80.9% 0.023 272)
-
Step 400
400
#98A0B8
oklch(70.7% 0.036 270.9)
-
Step 500
500
#8088A6
oklch(63.1% 0.046 273.3)
-
Step 600
600
#697291
oklch(55.6% 0.049 272.1)
-
Step 700
700 (this color)
#545C78
oklch(47.9% 0.046 272.2)
-
Step 800
800
#474E64
oklch(42.7% 0.038 271)
-
Step 900
900
#3C4152
oklch(37.8% 0.03 272.1)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#545C78 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) | #545E79 | 0.006 |
| Deuteranopia (no green cones) | #515B77 | 0.006 |
| Tritanopia (no blue cones) | #4B6165 | 0.042 |
| Achromatopsia (no color) | #5D5D5D | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #545C78
#545C78
oklch(47.9% 0.046 272.2)
- #675D3F
#675D3F
oklch(48% 0.046 91.8)
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 #545C78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.014
- YInMn Blue #415A77 ΔE 0.028
- Slate #516572 ΔE 0.032
- Dusk #4E5481 ΔE 0.033
- Denim #3B638C ΔE 0.042
- Dusky Blue #475F94 ΔE 0.046
- Twilight #4E518B ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
Use #545C78 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.