#3C3E90
Closest named color: Dark Slate Blue (#483D8B). oklch(41% 0.133 277.8), rgb(60, 62, 144).
Aa
White text reads best on this color (9.19:1).
About this color
#3C3E90 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.133 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.021 away. White text reads best on it, at 9.19:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #3C3E90 |
| RGB | rgb(60, 62, 144) |
| HSL | hsl(239, 41%, 40%) |
| OKLCH | oklch(41% 0.133 277.8) |
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 #3C3E90 | 9.19:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #3C3E90 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #3C3E90 text on white | 9.19:1 | AAA | Lc 90.9 | Preferred for body text |
| #3C3E90 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B4BCF3
oklch(80.8% 0.078 278.1)
-
Step 400
400
#8E98ED
oklch(70.7% 0.124 277.6)
-
Step 500
500
#757CE7
oklch(63.1% 0.159 278)
-
Step 600
600
#5F63D5
oklch(55.7% 0.172 277.7)
-
Step 700
700
#4F51B9
oklch(49.2% 0.16 277.9)
-
Step 800
800 (this color)
#3C3E90
oklch(41% 0.133 277.8)
-
Step 900
900
#363977
oklch(37.6% 0.104 278.1)
-
Step 950
950
#1F2246
oklch(27% 0.066 277.4)
#3C3E90 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) | #014B93 | 0.054 |
| Deuteranopia (no green cones) | #00448E | 0.052 |
| Tritanopia (no blue cones) | #0A5161 | 0.115 |
| Achromatopsia (no color) | #484848 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C3E90
#3C3E90
oklch(41% 0.133 277.8)
- #574A00
#574A00
oklch(41% 0.085 97.6)
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 #3C3E90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.021
- Blueberry #464196 ΔE 0.021
- Cobalt #1E488F ΔE 0.040
- Sapphire #2138AB ΔE 0.059
- Dusk Blue #26538D ΔE 0.060
- Twilight #4E518B ΔE 0.063
- Twilight Blue #0A437A ΔE 0.064
- Light Navy #155084 ΔE 0.065
Use #3C3E90 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.