#3148AC
Closest named color: Sapphire (#2138AB). oklch(44.6% 0.162 269), rgb(49, 72, 172).
Aa
White text reads best on this color (7.91:1).
About this color
#3148AC is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.162 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.045 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #3148AC |
| RGB | rgb(49, 72, 172) |
| HSL | hsl(229, 56%, 43%) |
| OKLCH | oklch(44.6% 0.162 269) |
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 #3148AC | 7.91:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #3148AC | 2.65:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #3148AC text on white | 7.91:1 | AAA | Lc 87.0 | Fine for body text |
| #3148AC text on black | 2.65:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5B7DFD
oklch(63.1% 0.194 269)
-
Step 600
600
#4462EC
oklch(55.7% 0.21 269.1)
-
Step 700
700
#3650CD
oklch(49.1% 0.195 268.9)
-
Step 800
800 (this color)
#3148AC
oklch(44.6% 0.162 269)
-
Step 900
900
#273A83
oklch(37.8% 0.125 268.7)
-
Step 950
950
#17224D
oklch(26.9% 0.081 269.5)
#3148AC 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) | #0057AF | 0.043 |
| Deuteranopia (no green cones) | #004CAA | 0.031 |
| Tritanopia (no blue cones) | #006173 | 0.130 |
| Achromatopsia (no color) | #515151 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3148AC
#3148AC
oklch(44.6% 0.162 269)
- #685100
#685100
oklch(44.6% 0.091 89.7)
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 #3148AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.045
- Blueberry #464196 ΔE 0.046
- Blue Blue #2242C7 ΔE 0.048
- Cobalt #1E488F ΔE 0.052
- Majorelle Blue #3F37C9 ΔE 0.058
- Dusk Blue #26538D ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
Use #3148AC 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.