#4D537C
Closest named color: Dusk (#4E5481). oklch(45.5% 0.067 277), rgb(77, 83, 124).
Aa
White text reads best on this color (7.38:1).
About this color
#4D537C is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.067 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.008 away. White text reads best on it, at 7.38:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #4D537C |
| RGB | rgb(77, 83, 124) |
| HSL | hsl(232, 23%, 39%) |
| OKLCH | oklch(45.5% 0.067 277) |
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 #4D537C | 7.38:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #4D537C | 2.84:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #4D537C text on white | 7.38:1 | AAA | Lc 85.6 | Fine for body text |
| #4D537C text on black | 2.84:1 | Fails | Lc -16.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E8
oklch(88.5% 0.022 277.5)
-
Step 300
300
#BABFDB
oklch(81% 0.04 277.5)
-
Step 400
400
#969EC8
oklch(70.8% 0.062 276.3)
-
Step 500
500
#7D85BA
oklch(63.1% 0.08 277.2)
-
Step 600
600
#666EA6
oklch(55.5% 0.087 276.9)
-
Step 700
700
#555C8F
oklch(49.1% 0.082 277)
-
Step 800
800 (this color)
#4D537C
oklch(45.5% 0.067 277)
-
Step 900
900
#3A3F5D
oklch(37.7% 0.052 276.3)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#4D537C 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) | #46587E | 0.016 |
| Deuteranopia (no green cones) | #43547B | 0.014 |
| Tritanopia (no blue cones) | #405B62 | 0.059 |
| Achromatopsia (no color) | #565656 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D537C
#4D537C
oklch(45.5% 0.067 277)
- #615728
#615728
oklch(45.6% 0.067 97.5)
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 #4D537C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.008
- Dusty Grape #545775 ΔE 0.022
- Twilight #4E518B ΔE 0.027
- YInMn Blue #415A77 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.046
- Denim #3B638C ΔE 0.050
Use #4D537C 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.