#3145AD
Closest named color: Sapphire (#2138AB). oklch(44.1% 0.167 269.8), rgb(49, 69, 173).
Aa
White text reads best on this color (8.12:1).
About this color
#3145AD is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.167 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.038 away. White text reads best on it, at 8.12:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #3145AD |
| RGB | rgb(49, 69, 173) |
| HSL | hsl(230, 56%, 44%) |
| OKLCH | oklch(44.1% 0.167 269.8) |
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 #3145AD | 8.12:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #3145AD | 2.58:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #3145AD text on white | 8.12:1 | AAA | Lc 87.6 | Fine for body text |
| #3145AD text on black | 2.58:1 | Fails | Lc -14.5 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FE
oklch(88.5% 0.054 270.4)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7C9AFF
oklch(70.8% 0.152 269.7)
-
Step 500
500
#5C7CFF
oklch(63.1% 0.197 269.6)
-
Step 600
600
#4560F0
oklch(55.7% 0.217 269.7)
-
Step 700
700
#384ED1
oklch(49.2% 0.202 269.8)
-
Step 800
800 (this color)
#3145AD
oklch(44.1% 0.167 269.8)
-
Step 900
900
#283985
oklch(37.8% 0.129 269.7)
-
Step 950
950
#17224E
oklch(27% 0.082 269.6)
#3145AD 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) | #0055B0 | 0.044 |
| Deuteranopia (no green cones) | #004AAB | 0.032 |
| Tritanopia (no blue cones) | #005F72 | 0.134 |
| Achromatopsia (no color) | #505050 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3145AD
#3145AD
oklch(44.1% 0.167 269.8)
- #665000
#665000
oklch(44.1% 0.09 90.4)
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 #3145AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.038
- Blue Blue #2242C7 ΔE 0.044
- Blueberry #464196 ΔE 0.046
- Majorelle Blue #3F37C9 ΔE 0.053
- Cobalt #1E488F ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.064
- Dusk Blue #26538D ΔE 0.068
Use #3145AD 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.