#51528F
Closest named color: Twilight (#4E518B). oklch(46.7% 0.098 281.2), rgb(81, 82, 143).
Aa
White text reads best on this color (7.11:1).
About this color
#51528F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.098 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.008 away. White text reads best on it, at 7.11:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.95:1 |
| White text | 7.11:1 |
Values
| HEX | #51528F |
| RGB | rgb(81, 82, 143) |
| HSL | hsl(239, 28%, 44%) |
| OKLCH | oklch(46.7% 0.098 281.2) |
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 #51528F | 7.11:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #51528F | 2.95:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #51528F text on white | 7.11:1 | AAA | Lc 84.6 | Fine for body text |
| #51528F text on black | 2.95:1 | 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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D6D8EB
oklch(88.6% 0.026 281.1)
-
Step 300
300
#BBBEDF
oklch(81% 0.046 281.2)
-
Step 400
400
#989BCF
oklch(70.6% 0.076 281.7)
-
Step 500
500
#7F82C3
oklch(63% 0.097 281.2)
-
Step 600
600
#696BAF
oklch(55.6% 0.105 281.1)
-
Step 700
700 (this color)
#51528F
oklch(46.7% 0.098 281.2)
-
Step 800
800
#48497A
oklch(42.8% 0.08 281.5)
-
Step 900
900
#3C3D62
oklch(37.6% 0.063 281.7)
-
Step 950
950
#23243A
oklch(27% 0.041 281.3)
#51528F 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) | #3C5A91 | 0.033 |
| Deuteranopia (no green cones) | #38568E | 0.034 |
| Tritanopia (no blue cones) | #3E5E69 | 0.085 |
| Achromatopsia (no color) | #585858 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51528F
#51528F
oklch(46.7% 0.098 281.2)
- #665B00
#665B00
oklch(46.7% 0.098 101.2)
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 #51528F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.008
- Dusk #4E5481 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.037
- Dusty Grape #545775 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.050
- Dusk Blue #26538D ΔE 0.053
- Blueberry #464196 ΔE 0.054
Use #51528F 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.