#3145A5
Closest named color: Blueberry (#464196). oklch(43.4% 0.156 269.8), rgb(49, 69, 165).
Aa
White text reads best on this color (8.31:1).
About this color
#3145A5 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.156 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.037 away. White text reads best on it, at 8.31:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.52:1 |
| White text | 8.31:1 |
Values
| HEX | #3145A5 |
| RGB | rgb(49, 69, 165) |
| HSL | hsl(230, 54%, 42%) |
| OKLCH | oklch(43.4% 0.156 269.8) |
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 #3145A5 | 8.31:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #3145A5 | 2.52:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #3145A5 text on white | 8.31:1 | AAA | Lc 88.3 | Fine for body text |
| #3145A5 text on black | 2.52:1 | Fails | Lc -13.9 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#A9BEFC
oklch(80.8% 0.091 269.8)
-
Step 400
400
#7D9AFB
oklch(70.7% 0.146 269.8)
-
Step 500
500
#5E7DF9
oklch(63% 0.188 269.8)
-
Step 600
600
#4763E8
oklch(55.7% 0.203 269.6)
-
Step 700
700
#3A51C9
oklch(49.2% 0.187 269.8)
-
Step 800
800 (this color)
#3145A5
oklch(43.4% 0.156 269.8)
-
Step 900
900
#293A81
oklch(37.7% 0.121 269.6)
-
Step 950
950
#18234C
oklch(27.1% 0.077 269.4)
#3145A5 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) | #0054A8 | 0.044 |
| Deuteranopia (no green cones) | #0049A3 | 0.033 |
| Tritanopia (no blue cones) | #005D6E | 0.127 |
| Achromatopsia (no color) | #4E4E4E | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3145A5
#3145A5
oklch(43.4% 0.156 269.8)
- #644E00
#644E00
oklch(43.5% 0.089 90)
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 #3145A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.037
- Sapphire #2138AB ΔE 0.039
- Cobalt #1E488F ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.054
- Blue Blue #2242C7 ΔE 0.056
- Dusk Blue #26538D ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.065
- Light Navy #155084 ΔE 0.069
Use #3145A5 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.