#39579C
Closest named color: Denim Blue (#3B5B92). oklch(46.9% 0.117 264.6), rgb(57, 87, 156).
Aa
White text reads best on this color (6.95:1).
About this color
#39579C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.117 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.022 away. White text reads best on it, at 6.95:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.01:1 |
| White text | 6.95:1 |
Values
| HEX | #39579C |
| RGB | rgb(57, 87, 156) |
| HSL | hsl(222, 46%, 42%) |
| OKLCH | oklch(46.9% 0.117 264.6) |
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 #39579C | 6.95:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #39579C | 3.01:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #39579C text on white | 6.95:1 | AA | Lc 83.9 | Fine for body text |
| #39579C text on black | 3.01:1 | AA large text | Lc -18.1 | 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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC1E6
oklch(81% 0.056 264.7)
-
Step 400
400
#84A0DA
oklch(70.7% 0.091 264.3)
-
Step 500
500
#6687D0
oklch(63% 0.117 264.8)
-
Step 600
600
#4E70BD
oklch(55.6% 0.126 264.7)
-
Step 700
700 (this color)
#39579C
oklch(46.9% 0.117 264.6)
-
Step 800
800
#344C84
oklch(42.6% 0.098 265)
-
Step 900
900
#2D406A
oklch(37.7% 0.076 264.6)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#39579C 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) | #375E9F | 0.019 |
| Deuteranopia (no green cones) | #28559B | 0.019 |
| Tritanopia (no blue cones) | #006772 | 0.100 |
| Achromatopsia (no color) | #595959 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39579C
#39579C
oklch(46.9% 0.117 264.6)
- #745500
#745500
oklch(47% 0.096 84)
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 #39579C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.022
- Dusk Blue #26538D ΔE 0.034
- Dusky Blue #475F94 ΔE 0.035
- Twilight #4E518B ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.038
- Denim #3B638C ΔE 0.048
- Dusk #4E5481 ΔE 0.049
- Peacock Blue #016795 ΔE 0.056
Use #39579C 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.