#3D588F
Closest named color: Denim Blue (#3B5B92). oklch(46.6% 0.096 263.4), rgb(61, 88, 143).
Aa
White text reads best on this color (7.02:1).
About this color
#3D588F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.096 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.009 away. White text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.99:1 |
| White text | 7.02:1 |
Values
| HEX | #3D588F |
| RGB | rgb(61, 88, 143) |
| HSL | hsl(220, 40%, 40%) |
| OKLCH | oklch(46.6% 0.096 263.4) |
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 #3D588F | 7.02:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #3D588F | 2.99:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #3D588F text on white | 7.02:1 | AAA | Lc 84.2 | Fine for body text |
| #3D588F text on black | 2.99:1 | Fails | Lc -17.8 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EB
oklch(88.4% 0.027 264.4)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#89A1CF
oklch(70.8% 0.073 263.2)
-
Step 500
500
#6B89C3
oklch(63.1% 0.094 263)
-
Step 600
600
#5372B0
oklch(55.6% 0.103 263.2)
-
Step 700
700 (this color)
#3D588F
oklch(46.6% 0.096 263.4)
-
Step 800
800
#384E7A
oklch(42.7% 0.078 263.3)
-
Step 900
900
#304162
oklch(37.6% 0.061 262.9)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#3D588F 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) | #415D91 | 0.016 |
| Deuteranopia (no green cones) | #37558E | 0.012 |
| Tritanopia (no blue cones) | #07646C | 0.086 |
| Achromatopsia (no color) | #595959 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D588F
#3D588F
oklch(46.6% 0.096 263.4)
- #735400
#735400
oklch(46.6% 0.096 83.8)
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 #3D588F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.009
- Light Navy Blue #2E5A88 ΔE 0.021
- Dusky Blue #475F94 ΔE 0.026
- Twilight #4E518B ΔE 0.028
- Dusk Blue #26538D ΔE 0.030
- Dusk #4E5481 ΔE 0.030
- Denim #3B638C ΔE 0.034
- YInMn Blue #415A77 ΔE 0.042
Use #3D588F 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.