#3E556B
Closest named color: YInMn Blue (#415A77). oklch(44% 0.046 247.8), rgb(62, 85, 107).
Aa
White text reads best on this color (7.73:1).
About this color
#3E556B is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.046 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.023 away. White text reads best on it, at 7.73:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #3E556B |
| RGB | rgb(62, 85, 107) |
| HSL | hsl(209, 27%, 33%) |
| OKLCH | oklch(44% 0.046 247.8) |
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 #3E556B | 7.73:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #3E556B | 2.71:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #3E556B text on white | 7.73:1 | AAA | Lc 86.8 | Fine for body text |
| #3E556B text on black | 2.71:1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8CA4BB
oklch(70.8% 0.043 247.3)
-
Step 500
500
#6F8DAA
oklch(63.1% 0.056 247.8)
-
Step 600
600
#577795
oklch(55.7% 0.06 247.3)
-
Step 700
700
#47647F
oklch(49.2% 0.055 247.2)
-
Step 800
800 (this color)
#3E556B
oklch(44% 0.046 247.8)
-
Step 900
900
#324354
oklch(37.6% 0.037 248.8)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#3E556B 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) | #4C556C | 0.020 |
| Deuteranopia (no green cones) | #47516B | 0.016 |
| Tritanopia (no blue cones) | #2E5A5C | 0.039 |
| Achromatopsia (no color) | #535353 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E556B
#3E556B
oklch(44% 0.046 247.8)
- #644E37
#644E37
oklch(44.1% 0.046 67.4)
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 #3E556B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.023
- Dusty Grape #545775 ΔE 0.037
- Dusk #4E5481 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.053
- Slate #516572 ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.058
Use #3E556B 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.