#3C588B
Closest named color: Denim Blue (#3B5B92). oklch(46.3% 0.09 261.7), rgb(60, 88, 139).
Aa
White text reads best on this color (7.09:1).
About this color
#3C588B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.090 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.013 away. White text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.96:1 |
| White text | 7.09:1 |
Values
| HEX | #3C588B |
| RGB | rgb(60, 88, 139) |
| HSL | hsl(219, 40%, 39%) |
| OKLCH | oklch(46.3% 0.09 261.7) |
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 #3C588B | 7.09:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #3C588B | 2.96:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #3C588B text on white | 7.09:1 | AAA | Lc 84.5 | Fine for body text |
| #3C588B text on black | 2.96:1 | Fails | Lc -17.5 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
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
#B1C1DE
oklch(80.8% 0.045 262.4)
-
Step 400
400
#89A1CD
oklch(70.7% 0.07 262.4)
-
Step 500
500
#6B8AC0
oklch(63.2% 0.089 261.2)
-
Step 600
600
#5373AC
oklch(55.6% 0.097 261.4)
-
Step 700
700 (this color)
#3C588B
oklch(46.3% 0.09 261.7)
-
Step 800
800
#384F78
oklch(42.8% 0.074 261.4)
-
Step 900
900
#304161
oklch(37.6% 0.059 262.4)
-
Step 950
950
#1C2639
oklch(26.9% 0.038 262.7)
#3C588B 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) | #435C8D | 0.016 |
| Deuteranopia (no green cones) | #3A558A | 0.009 |
| Tritanopia (no blue cones) | #0A636B | 0.080 |
| Achromatopsia (no color) | #585858 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C588B
#3C588B
oklch(46.3% 0.09 261.7)
- #72530D
#72530D
oklch(46.3% 0.09 81.8)
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 #3C588B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.013
- Light Navy Blue #2E5A88 ΔE 0.017
- Dusk #4E5481 ΔE 0.028
- Dusky Blue #475F94 ΔE 0.028
- Twilight #4E518B ΔE 0.029
- Dusk Blue #26538D ΔE 0.030
- Denim #3B638C ΔE 0.032
- YInMn Blue #415A77 ΔE 0.036
Use #3C588B 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.