#3B45A8
Closest named color: Blueberry (#464196). oklch(44.2% 0.157 273.7), rgb(59, 69, 168).
Aa
White text reads best on this color (8.06:1).
About this color
#3B45A8 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.157 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.033 away. White text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #3B45A8 |
| RGB | rgb(59, 69, 168) |
| HSL | hsl(234, 48%, 45%) |
| OKLCH | oklch(44.2% 0.157 273.7) |
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 #3B45A8 | 8.06:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #3B45A8 | 2.60:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #3B45A8 text on white | 8.06:1 | AAA | Lc 87.5 | Fine for body text |
| #3B45A8 text on black | 2.60:1 | Fails | Lc -14.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FC
oklch(88.4% 0.052 274.5)
-
Step 300
300
#ADBDFD
oklch(80.9% 0.092 273.3)
-
Step 400
400
#8498FB
oklch(70.7% 0.146 273.5)
-
Step 500
500
#687AF9
oklch(63% 0.189 273.7)
-
Step 600
600
#535FE8
oklch(55.6% 0.205 273.9)
-
Step 700
700
#444DCA
oklch(49.1% 0.191 273.8)
-
Step 800
800 (this color)
#3B45A8
oklch(44.2% 0.157 273.7)
-
Step 900
900
#2F3881
oklch(37.7% 0.122 273.7)
-
Step 950
950
#1B214C
oklch(26.9% 0.079 273.9)
#3B45A8 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) | #0055AB | 0.052 |
| Deuteranopia (no green cones) | #004BA6 | 0.044 |
| Tritanopia (no blue cones) | #005D6F | 0.132 |
| Achromatopsia (no color) | #505050 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B45A8
#3B45A8
oklch(44.2% 0.157 273.7)
- #645100
#645100
oklch(44.1% 0.09 93.2)
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 #3B45A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.033
- Sapphire #2138AB ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.052
- Cobalt #1E488F ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Dusk Blue #26538D ΔE 0.064
Use #3B45A8 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.