#3C3CAB
Closest named color: Sapphire (#2138AB). oklch(42.9% 0.173 276.3), rgb(60, 60, 171).
Aa
White text reads best on this color (8.65:1).
About this color
#3C3CAB is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.173 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.036 away. White text reads best on it, at 8.65:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #3C3CAB |
| RGB | rgb(60, 60, 171) |
| HSL | hsl(240, 48%, 45%) |
| OKLCH | oklch(42.9% 0.173 276.3) |
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 #3C3CAB | 8.65:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #3C3CAB | 2.42:1 | Fails | Lc 14.8 | Not readable |
| #3C3CAB text on white | 8.65:1 | AAA | Lc 89.1 | Fine for body text |
| #3C3CAB text on black | 2.42:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FF
oklch(88.6% 0.056 276.3)
-
Step 300
300
#B0BCFF
oklch(81% 0.096 276.2)
-
Step 400
400
#8895FF
oklch(70.6% 0.155 276.4)
-
Step 500
500
#6D76FF
oklch(63% 0.2 276.2)
-
Step 600
600
#5858F2
oklch(55.6% 0.224 276.2)
-
Step 700
700
#4947D3
oklch(49.2% 0.208 276.2)
-
Step 800
800 (this color)
#3C3CAB
oklch(42.9% 0.173 276.3)
-
Step 900
900
#323587
oklch(37.8% 0.134 276.3)
-
Step 950
950
#1D204F
oklch(27.1% 0.085 276.4)
#3C3CAB 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) | #0050AF | 0.059 |
| Deuteranopia (no green cones) | #0047A9 | 0.050 |
| Tritanopia (no blue cones) | #00586E | 0.141 |
| Achromatopsia (no color) | #4C4C4C | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C3CAB
#3C3CAB
oklch(42.9% 0.173 276.3)
- #5E4F00
#5E4F00
oklch(43% 0.089 96.5)
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 #3C3CAB, closest first.
No curated palette has a color within ΔE 0.04 of #3C3CAB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.036
- Blueberry #464196 ΔE 0.040
- Majorelle Blue #3F37C9 ΔE 0.048
- Blue Blue #2242C7 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.056
- Indigo Blue #3A18B1 ΔE 0.061
- Cobalt #1E488F ΔE 0.063
Use #3C3CAB 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.