#39439E
Closest named color: Blueberry (#464196). oklch(42.9% 0.147 273.8), rgb(57, 67, 158).
Aa
White text reads best on this color (8.50:1).
About this color
#39439E is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.147 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.023 away. White text reads best on it, at 8.50:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.47:1 |
| White text | 8.50:1 |
Values
| HEX | #39439E |
| RGB | rgb(57, 67, 158) |
| HSL | hsl(234, 47%, 42%) |
| OKLCH | oklch(42.9% 0.147 273.8) |
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 #39439E | 8.50:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #39439E | 2.47:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #39439E text on white | 8.50:1 | AAA | Lc 88.9 | Fine for body text |
| #39439E text on black | 2.47:1 | Fails | Lc -13.3 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#AFBDF9
oklch(80.9% 0.086 274.1)
-
Step 400
400
#8699F5
oklch(70.7% 0.136 273.6)
-
Step 500
500
#6A7CF1
oklch(63% 0.175 273.7)
-
Step 600
600
#5462E0
oklch(55.6% 0.19 273.7)
-
Step 700
700
#4550C3
oklch(49.1% 0.178 273.7)
-
Step 800
800 (this color)
#39439E
oklch(42.9% 0.147 273.8)
-
Step 900
900
#30397D
oklch(37.6% 0.115 273.9)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#39439E 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) | #0051A1 | 0.049 |
| Deuteranopia (no green cones) | #00489C | 0.044 |
| Tritanopia (no blue cones) | #00596A | 0.123 |
| Achromatopsia (no color) | #4D4D4D | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39439E
#39439E
oklch(42.9% 0.147 273.8)
- #604E00
#604E00
oklch(43% 0.088 93.6)
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 #39439E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.023
- Dark Slate Blue #483D8B ΔE 0.039
- Cobalt #1E488F ΔE 0.040
- Sapphire #2138AB ΔE 0.047
- Dusk Blue #26538D ΔE 0.056
- Twilight #4E518B ΔE 0.063
- Light Navy #155084 ΔE 0.067
- Blue Blue #2242C7 ΔE 0.070
Use #39439E 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.