#3C4E7C
Closest named color: Dusk (#4E5481). oklch(43.1% 0.08 266.9), rgb(60, 78, 124).
Aa
White text reads best on this color (8.16:1).
About this color
#3C4E7C is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.080 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.034 away. White text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.57:1 |
| White text | 8.16:1 |
Values
| HEX | #3C4E7C |
| RGB | rgb(60, 78, 124) |
| HSL | hsl(223, 35%, 36%) |
| OKLCH | oklch(43.1% 0.08 266.9) |
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 #3C4E7C | 8.16:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #3C4E7C | 2.57:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #3C4E7C text on white | 8.16:1 | AAA | Lc 88.1 | Fine for body text |
| #3C4E7C text on black | 2.57:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B3C0E0
oklch(80.8% 0.047 267.8)
-
Step 400
400
#8BA0D0
oklch(70.7% 0.075 266.2)
-
Step 500
500
#6F88C4
oklch(63.2% 0.095 266.4)
-
Step 600
600
#5871B0
oklch(55.7% 0.103 266.7)
-
Step 700
700
#485E98
oklch(49.1% 0.097 267.1)
-
Step 800
800 (this color)
#3C4E7C
oklch(43.1% 0.08 266.9)
-
Step 900
900
#324063
oklch(37.6% 0.063 266.8)
-
Step 950
950
#1E263A
oklch(27.1% 0.039 267.1)
#3C4E7C 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) | #3C527E | 0.012 |
| Deuteranopia (no green cones) | #354D7B | 0.010 |
| Tritanopia (no blue cones) | #21585F | 0.072 |
| Achromatopsia (no color) | #4F4F4F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4E7C
#3C4E7C
oklch(43.1% 0.08 266.9)
- #634D11
#634D11
oklch(43.2% 0.08 87.3)
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 #3C4E7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.034
- Dusk Blue #26538D ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Light Navy #155084 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.047
Use #3C4E7C 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.