#42316E
Closest named color: Dark Slate Blue (#483D8B). oklch(36.5% 0.102 293.6), rgb(66, 49, 110).
Aa
White text reads best on this color (11.07:1).
About this color
#42316E is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.102 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 11.07:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #42316E |
| RGB | rgb(66, 49, 110) |
| HSL | hsl(257, 38%, 31%) |
| OKLCH | oklch(36.5% 0.102 293.6) |
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 #42316E | 11.07:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #42316E | 1.89:1 | Fails | Lc 8.5 | Not readable |
| #42316E text on white | 11.07:1 | AAA | Lc 95.4 | Preferred for body text |
| #42316E text on black | 1.89:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C2B8EE
oklch(80.9% 0.076 293.1)
-
Step 400
400
#A491E5
oklch(70.6% 0.122 293.4)
-
Step 500
500
#8F73DE
oklch(63% 0.157 293.4)
-
Step 600
600
#7B59CB
oklch(55.6% 0.17 293.9)
-
Step 700
700
#6748B0
oklch(49% 0.159 293.4)
-
Step 800
800
#543C8E
oklch(42.6% 0.13 293.6)
-
Step 900
900 (this color)
#42316E
oklch(36.5% 0.102 293.6)
-
Step 950
950
#281F43
oklch(27% 0.065 293)
#42316E 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) | #173C70 | 0.062 |
| Deuteranopia (no green cones) | #1B3B6D | 0.059 |
| Tritanopia (no blue cones) | #373D4A | 0.082 |
| Achromatopsia (no color) | #3C3C3C | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42316E
#42316E
oklch(36.5% 0.102 293.6)
- #3F4200
#3F4200
oklch(36.4% 0.081 112.7)
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 #42316E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.072
- Twilight Blue #0A437A ΔE 0.075
- Blueberry #464196 ΔE 0.076
- Marine Blue #01386A ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.083
- Royal Purple #4B006E ΔE 0.083
- Indigo #4B0082 ΔE 0.084
Use #42316E 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.