#3D508C
Closest named color: Twilight (#4E518B). oklch(44.6% 0.101 268.8), rgb(61, 80, 140).
Aa
White text reads best on this color (7.70:1).
About this color
#3D508C is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.101 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.025 away. White text reads best on it, at 7.70:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.72:1 |
| White text | 7.70:1 |
Values
| HEX | #3D508C |
| RGB | rgb(61, 80, 140) |
| HSL | hsl(226, 39%, 39%) |
| OKLCH | oklch(44.6% 0.101 268.8) |
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 #3D508C | 7.70:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #3D508C | 2.72:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #3D508C text on white | 7.70:1 | AAA | Lc 86.6 | Fine for body text |
| #3D508C text on black | 2.72:1 | Fails | Lc -15.5 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1C0E8
oklch(81% 0.059 268.9)
-
Step 400
400
#889EDC
oklch(70.6% 0.095 268.9)
-
Step 500
500
#6B85D3
oklch(63.1% 0.122 268.8)
-
Step 600
600
#546DC0
oklch(55.5% 0.132 269.2)
-
Step 700
700
#445BA6
oklch(49.1% 0.123 268.7)
-
Step 800
800 (this color)
#3D508C
oklch(44.6% 0.101 268.8)
-
Step 900
900
#303F6B
oklch(37.7% 0.078 268.3)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#3D508C 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) | #37578E | 0.020 |
| Deuteranopia (no green cones) | #2D508B | 0.019 |
| Tritanopia (no blue cones) | #115D67 | 0.090 |
| Achromatopsia (no color) | #535353 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D508C
#3D508C
oklch(44.6% 0.101 268.8)
- #695100
#695100
oklch(44.7% 0.091 88.8)
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 #3D508C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.025
- Dusk Blue #26538D ΔE 0.025
- Denim Blue #3B5B92 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.034
- Dusk #4E5481 ΔE 0.034
- Light Navy #155084 ΔE 0.041
- Cobalt #1E488F ΔE 0.044
- Blueberry #464196 ΔE 0.046
Use #3D508C 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.