#42449D
Closest named color: Blueberry (#464196). oklch(43.6% 0.142 277.8), rgb(66, 68, 157).
Aa
White text reads best on this color (8.25:1).
About this color
#42449D is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.142 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.014 away. White text reads best on it, at 8.25:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #42449D |
| RGB | rgb(66, 68, 157) |
| HSL | hsl(239, 41%, 44%) |
| OKLCH | oklch(43.6% 0.142 277.8) |
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 #42449D | 8.25:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #42449D | 2.54:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #42449D text on white | 8.25:1 | AAA | Lc 88.2 | Fine for body text |
| #42449D text on black | 2.54:1 | Fails | Lc -14.0 | 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
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B3BCF6
oklch(80.9% 0.083 277.5)
-
Step 400
400
#8D97F2
oklch(70.6% 0.133 277.7)
-
Step 500
500
#747AED
oklch(63% 0.17 278.1)
-
Step 600
600
#5E60DB
oklch(55.5% 0.184 277.9)
-
Step 700
700
#4E4FBE
oklch(49.1% 0.17 277.7)
-
Step 800
800 (this color)
#42449D
oklch(43.6% 0.142 277.8)
-
Step 900
900
#35387A
oklch(37.6% 0.11 277.7)
-
Step 950
950
#1F2248
oklch(27.1% 0.07 277.3)
#42449D 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) | #0052A0 | 0.058 |
| Deuteranopia (no green cones) | #004B9B | 0.056 |
| Tritanopia (no blue cones) | #0C5969 | 0.125 |
| Achromatopsia (no color) | #4F4F4F | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42449D
#42449D
oklch(43.6% 0.142 277.8)
- #5F5100
#5F5100
oklch(43.6% 0.09 97.6)
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 #42449D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.014
- Dark Slate Blue #483D8B ΔE 0.034
- Cobalt #1E488F ΔE 0.049
- Twilight #4E518B ΔE 0.054
- Dusk Blue #26538D ΔE 0.058
- Sapphire #2138AB ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.068
- Rebecca Purple #663399 ΔE 0.069
Use #42449D 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.