#3C4F8F
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.108 269.2), rgb(60, 79, 143).
Aa
White text reads best on this color (7.75:1).
About this color
#3C4F8F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.108 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.025 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #3C4F8F |
| RGB | rgb(60, 79, 143) |
| HSL | hsl(226, 41%, 40%) |
| OKLCH | oklch(44.5% 0.108 269.2) |
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 #3C4F8F | 7.75:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #3C4F8F | 2.70:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #3C4F8F text on white | 7.75:1 | AAA | Lc 86.8 | Fine for body text |
| #3C4F8F text on black | 2.70:1 | Fails | Lc -15.3 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B0C0EA
oklch(81% 0.062 268.6)
-
Step 400
400
#879EE0
oklch(70.7% 0.101 269)
-
Step 500
500
#6A84D7
oklch(63% 0.129 269.3)
-
Step 600
600
#536CC4
oklch(55.5% 0.139 269.5)
-
Step 700
700
#435AAA
oklch(49.1% 0.13 269.1)
-
Step 800
800 (this color)
#3C4F8F
oklch(44.5% 0.108 269.2)
-
Step 900
900
#303E6E
oklch(37.7% 0.084 269.8)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#3C4F8F 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) | #335691 | 0.021 |
| Deuteranopia (no green cones) | #284F8E | 0.023 |
| Tritanopia (no blue cones) | #055D68 | 0.096 |
| Achromatopsia (no color) | #525252 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4F8F
#3C4F8F
oklch(44.5% 0.108 269.2)
- #685000
#685000
oklch(44.4% 0.091 88.6)
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 #3C4F8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.025
- Twilight #4E518B ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.038
- Dusk #4E5481 ΔE 0.039
- Cobalt #1E488F ΔE 0.041
- Blueberry #464196 ΔE 0.041
- Light Navy #155084 ΔE 0.042
Use #3C4F8F 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.