#3C3C8A
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.127 279.1), rgb(60, 60, 138).
Aa
White text reads best on this color (9.52:1).
About this color
#3C3C8A is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.127 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.020 away. White text reads best on it, at 9.52:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #3C3C8A |
| RGB | rgb(60, 60, 138) |
| HSL | hsl(240, 39%, 39%) |
| OKLCH | oklch(40.2% 0.127 279.1) |
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 #3C3C8A | 9.52:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #3C3C8A | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #3C3C8A text on white | 9.52:1 | AAA | Lc 91.8 | Preferred for body text |
| #3C3C8A text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E8FD
oklch(93.5% 0.029 279.4)
-
Step 200
200
#D1D6FC
oklch(88.4% 0.053 279.4)
-
Step 300
300
#B3BBFE
oklch(81% 0.095 278.8)
-
Step 400
400
#8E94FD
oklch(70.7% 0.152 279.3)
-
Step 500
500
#7475FB
oklch(63.1% 0.195 278.9)
-
Step 600
600
#6059EA
oklch(55.6% 0.211 279.1)
-
Step 700
700
#5048CB
oklch(49.1% 0.195 279.1)
-
Step 800
800
#413CA4
oklch(42.7% 0.162 279.1)
-
Step 900
900 (this color)
#3C3C8A
oklch(40.2% 0.127 279.1)
-
Step 950
950
#1F204C
oklch(27% 0.08 278.7)
#3C3C8A 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) | #08498D | 0.054 |
| Deuteranopia (no green cones) | #004288 | 0.054 |
| Tritanopia (no blue cones) | #164E5D | 0.109 |
| Achromatopsia (no color) | #454545 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C3C8A
#3C3C8A
oklch(40.2% 0.127 279.1)
- #534800
#534800
oklch(40.1% 0.083 99.3)
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 #3C3C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.020
- Blueberry #464196 ΔE 0.029
- Cobalt #1E488F ΔE 0.043
- Twilight Blue #0A437A ΔE 0.060
- Dusk Blue #26538D ΔE 0.064
- Sapphire #2138AB ΔE 0.065
- Light Navy #155084 ΔE 0.066
- Twilight #4E518B ΔE 0.067
Use #3C3C8A 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.