#3D5778
Closest named color: YInMn Blue (#415A77). oklch(45.1% 0.063 254.8), rgb(61, 87, 120).
Aa
White text reads best on this color (7.41:1).
About this color
#3D5778 is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.063 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.012 away. White text reads best on it, at 7.41:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #3D5778 |
| RGB | rgb(61, 87, 120) |
| HSL | hsl(214, 33%, 35%) |
| OKLCH | oklch(45.1% 0.063 254.8) |
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 #3D5778 | 7.41:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #3D5778 | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #3D5778 text on white | 7.41:1 | AAA | Lc 85.7 | Fine for body text |
| #3D5778 text on black | 2.83:1 | Fails | Lc -16.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE7
oklch(88.5% 0.021 254.9)
-
Step 300
300
#B1C2D9
oklch(80.8% 0.038 256)
-
Step 400
400
#88A3C5
oklch(70.7% 0.058 254.4)
-
Step 500
500
#6A8CB7
oklch(63.1% 0.076 254.6)
-
Step 600
600
#5275A3
oklch(55.6% 0.083 255.6)
-
Step 700
700
#42628B
oklch(49% 0.076 255.1)
-
Step 800
800 (this color)
#3D5778
oklch(45.1% 0.063 254.8)
-
Step 900
900
#2F435B
oklch(37.7% 0.049 253.5)
-
Step 950
950
#1C2736
oklch(27% 0.032 256.3)
#3D5778 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) | #4A5979 | 0.019 |
| Deuteranopia (no green cones) | #435377 | 0.013 |
| Tritanopia (no blue cones) | #245E62 | 0.055 |
| Achromatopsia (no color) | #555555 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D5778
#3D5778
oklch(45.1% 0.063 254.8)
- #6A502B
#6A502B
oklch(45% 0.063 74.7)
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 #3D5778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.012
- Light Navy Blue #2E5A88 ΔE 0.029
- Dusk #4E5481 ΔE 0.030
- Dusty Grape #545775 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.042
- Denim #3B638C ΔE 0.042
- Dusk Blue #26538D ΔE 0.046
- Twilight #4E518B ΔE 0.046
Use #3D5778 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.