#39399C
Closest named color: Blueberry (#464196). oklch(40.9% 0.157 276.9), rgb(57, 57, 156).
Aa
White text reads best on this color (9.37:1).
About this color
#39399C is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.157 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.032 away. White text reads best on it, at 9.37:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.23:1 |
| White text | 9.37:1 |
Values
| HEX | #39399C |
| RGB | rgb(57, 57, 156) |
| HSL | hsl(240, 46%, 42%) |
| OKLCH | oklch(40.9% 0.157 276.9) |
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 #39399C | 9.37:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #39399C | 2.23:1 | Fails | Lc 12.8 | Not readable |
| #39399C text on white | 9.37:1 | AAA | Lc 91.2 | Preferred for body text |
| #39399C text on black | 2.23:1 | Fails | Lc -11.2 | Not readable |
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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FB
oklch(88.5% 0.05 276.6)
-
Step 300
300
#B1BCFC
oklch(81% 0.091 276.6)
-
Step 400
400
#8A96FA
oklch(70.7% 0.146 276.8)
-
Step 500
500
#7078F8
oklch(63.1% 0.188 276.9)
-
Step 600
600
#5B5DE7
oklch(55.7% 0.204 276.9)
-
Step 700
700
#4B4BC8
oklch(49% 0.189 276.9)
-
Step 800
800 (this color)
#39399C
oklch(40.9% 0.157 276.9)
-
Step 900
900
#333781
oklch(37.8% 0.123 276.5)
-
Step 950
950
#1E214B
oklch(27.1% 0.077 276.9)
#39399C 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) | #004B9F | 0.057 |
| Deuteranopia (no green cones) | #00429A | 0.049 |
| Tritanopia (no blue cones) | #005265 | 0.131 |
| Achromatopsia (no color) | #464646 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39399C
#39399C
oklch(40.9% 0.157 276.9)
- #574900
#574900
oklch(40.8% 0.084 96.5)
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 #39399C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.032
- Sapphire #2138AB ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.039
- Cobalt #1E488F ΔE 0.051
- Indigo Blue #3A18B1 ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.069
- Majorelle Blue #3F37C9 ΔE 0.073
- Blue Blue #2242C7 ΔE 0.075
Use #39399C 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.