#451B6E
Closest named color: Royal Purple (#4B006E). oklch(33.3% 0.136 302.7), rgb(69, 27, 110).
Aa
White text reads best on this color (12.84:1).
About this color
#451B6E is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.136 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.035 away. White text reads best on it, at 12.84:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.63:1 |
| White text | 12.84:1 |
Values
| HEX | #451B6E |
| RGB | rgb(69, 27, 110) |
| HSL | hsl(270, 61%, 27%) |
| OKLCH | oklch(33.3% 0.136 302.7) |
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 #451B6E | 12.84:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #451B6E | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #451B6E text on white | 12.84:1 | AAA | Lc 98.3 | Preferred for body text |
| #451B6E text on black | 1.63:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#E0D1F9
oklch(88.5% 0.057 302.3)
-
Step 300
300
#CDB1F7
oklch(80.9% 0.101 302.5)
-
Step 400
400
#B584F3
oklch(70.6% 0.163 302.8)
-
Step 500
500
#A460EF
oklch(63.2% 0.209 302.8)
-
Step 600
600
#8F40DD
oklch(55.5% 0.226 302.5)
-
Step 700
700
#7A30C0
oklch(49.1% 0.21 302.5)
-
Step 800
800
#632A9B
oklch(42.7% 0.174 302.6)
-
Step 900
900 (this color)
#451B6E
oklch(33.3% 0.136 302.7)
-
Step 950
950
#2F1948
oklch(27% 0.085 302.7)
#451B6E 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) | #003170 | 0.099 |
| Deuteranopia (no green cones) | #00326C | 0.100 |
| Tritanopia (no blue cones) | #3D2F42 | 0.100 |
| Achromatopsia (no color) | #323232 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #451B6E
#451B6E
oklch(33.3% 0.136 302.7)
- #2F3C00
#2F3C00
oklch(33.2% 0.081 122.2)
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 #451B6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.035
- Indigo #4B0082 ΔE 0.044
- Plum Purple #4E0550 ΔE 0.064
- Deep Violet #490648 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.075
- Midnight Blue #191970 ΔE 0.085
- Eggplant Purple #430541 ΔE 0.087
- Dark Slate Blue #483D8B ΔE 0.090
Use #451B6E 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.