#3D557E
Closest named color: YInMn Blue (#415A77). oklch(44.9% 0.074 260.7), rgb(61, 85, 126).
Aa
White text reads best on this color (7.50:1).
About this color
#3D557E is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.074 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.022 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #3D557E |
| RGB | rgb(61, 85, 126) |
| HSL | hsl(218, 35%, 37%) |
| OKLCH | oklch(44.9% 0.074 260.7) |
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 #3D557E | 7.50:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #3D557E | 2.79:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #3D557E text on white | 7.50:1 | AAA | Lc 86.0 | Fine for body text |
| #3D557E text on black | 2.79:1 | Fails | Lc -16.1 | 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
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B1C2DD
oklch(81% 0.043 259.6)
-
Step 400
400
#88A2CC
oklch(70.8% 0.068 259.9)
-
Step 500
500
#6B8ABF
oklch(63.1% 0.088 260.8)
-
Step 600
600
#5273AB
oklch(55.5% 0.096 260.5)
-
Step 700
700
#436093
oklch(49% 0.089 261.1)
-
Step 800
800 (this color)
#3D557E
oklch(44.9% 0.074 260.7)
-
Step 900
900
#304260
oklch(37.8% 0.057 260.3)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#3D557E 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) | #455880 | 0.015 |
| Deuteranopia (no green cones) | #3E527D | 0.009 |
| Tritanopia (no blue cones) | #205E64 | 0.066 |
| Achromatopsia (no color) | #555555 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D557E
#3D557E
oklch(44.9% 0.074 260.7)
- #6A501F
#6A501F
oklch(44.8% 0.074 80.6)
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 #3D557E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.023
- Dusk #4E5481 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.034
- Twilight #4E518B ΔE 0.036
- Dusk Blue #26538D ΔE 0.036
- Dusty Grape #545775 ΔE 0.036
- Denim #3B638C ΔE 0.043
Use #3D557E 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.