#3B588D
Closest named color: Denim Blue (#3B5B92). oklch(46.3% 0.093 261.7), rgb(59, 88, 141).
Aa
White text reads best on this color (7.07:1).
About this color
#3B588D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.093 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.011 away. White text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #3B588D |
| RGB | rgb(59, 88, 141) |
| HSL | hsl(219, 41%, 39%) |
| OKLCH | oklch(46.3% 0.093 261.7) |
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 #3B588D | 7.07:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #3B588D | 2.96:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #3B588D text on white | 7.07:1 | AAA | Lc 84.4 | Fine for body text |
| #3B588D text on black | 2.96:1 | Fails | Lc -17.6 | 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
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#88A1CE
oklch(70.6% 0.072 262)
-
Step 500
500
#6A8AC2
oklch(63.2% 0.092 261.2)
-
Step 600
600
#5273AE
oklch(55.7% 0.1 261.4)
-
Step 700
700 (this color)
#3B588D
oklch(46.3% 0.093 261.7)
-
Step 800
800
#374E79
oklch(42.6% 0.077 262.2)
-
Step 900
900
#304162
oklch(37.6% 0.061 262.9)
-
Step 950
950
#1C2639
oklch(26.9% 0.038 262.7)
#3B588D 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) | #425C8F | 0.015 |
| Deuteranopia (no green cones) | #38558C | 0.010 |
| Tritanopia (no blue cones) | #00646C | 0.083 |
| Achromatopsia (no color) | #585858 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B588D
#3B588D
oklch(46.3% 0.093 261.7)
- #735305
#735305
oklch(46.4% 0.094 82.1)
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 #3B588D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.011
- Light Navy Blue #2E5A88 ΔE 0.018
- Dusky Blue #475F94 ΔE 0.028
- Dusk Blue #26538D ΔE 0.028
- Twilight #4E518B ΔE 0.030
- Dusk #4E5481 ΔE 0.030
- Denim #3B638C ΔE 0.033
- YInMn Blue #415A77 ΔE 0.039
Use #3B588D 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.