#5B618C
Closest named color: Dusky Blue (#475F94). oklch(50.5% 0.069 277.5), rgb(91, 97, 140).
Aa
White text reads best on this color (5.94:1).
About this color
#5B618C is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.069 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.031 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #5B618C |
| RGB | rgb(91, 97, 140) |
| HSL | hsl(233, 21%, 45%) |
| OKLCH | oklch(50.5% 0.069 277.5) |
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 #5B618C | 5.94:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #5B618C | 3.53:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #5B618C text on white | 5.94:1 | AA | Lc 79.7 | Fine for body text |
| #5B618C text on black | 3.53:1 | AA large text | Lc -22.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD7
oklch(80.9% 0.034 278.1)
-
Step 400
400
#989EC2
oklch(70.7% 0.053 277.5)
-
Step 500
500
#7F86B3
oklch(63.1% 0.068 277.4)
-
Step 600
600
#696F9F
oklch(55.6% 0.075 278.2)
-
Step 700
700 (this color)
#5B618C
oklch(50.5% 0.069 277.5)
-
Step 800
800
#474C6E
oklch(42.7% 0.057 277.3)
-
Step 900
900
#3C3F59
oklch(37.6% 0.045 278.9)
-
Step 950
950
#232534
oklch(26.9% 0.028 278.4)
#5B618C 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) | #54668E | 0.016 |
| Deuteranopia (no green cones) | #51628B | 0.014 |
| Tritanopia (no blue cones) | #4E6970 | 0.061 |
| Achromatopsia (no color) | #646464 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B618C
#5B618C
oklch(50.5% 0.069 277.5)
- #6F6535
#6F6535
oklch(50.5% 0.068 97.8)
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 #5B618C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.031
- Denim #3B638C ΔE 0.040
- Dusty Grape #545775 ΔE 0.044
- Dusk #4E5481 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.049
- Slate #516572 ΔE 0.050
- Twilight #4E518B ΔE 0.052
- Metallic Blue #4F738E ΔE 0.053
Use #5B618C 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.