#3B3BA8
Closest named color: Sapphire (#2138AB). oklch(42.4% 0.17 276.3), rgb(59, 59, 168).
Aa
White text reads best on this color (8.83:1).
About this color
#3B3BA8 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.170 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.034 away. White text reads best on it, at 8.83:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #3B3BA8 |
| RGB | rgb(59, 59, 168) |
| HSL | hsl(240, 48%, 45%) |
| OKLCH | oklch(42.4% 0.17 276.3) |
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 #3B3BA8 | 8.83:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3B3BA8 | 2.37:1 | Fails | Lc 14.3 | Not readable |
| #3B3BA8 text on white | 8.83:1 | AAA | Lc 89.7 | Fine for body text |
| #3B3BA8 text on black | 2.37:1 | Fails | Lc -12.6 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#B0BCFF
oklch(81% 0.096 276.2)
-
Step 400
400
#8895FF
oklch(70.6% 0.155 276.4)
-
Step 500
500
#6E76FF
oklch(63.1% 0.2 276.5)
-
Step 600
600
#5959F0
oklch(55.6% 0.22 276.5)
-
Step 700
700
#4947D1
oklch(49% 0.206 276.3)
-
Step 800
800 (this color)
#3B3BA8
oklch(42.4% 0.17 276.3)
-
Step 900
900
#323586
oklch(37.7% 0.133 276.4)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#3B3BA8 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) | #004FAB | 0.059 |
| Deuteranopia (no green cones) | #0045A6 | 0.049 |
| Tritanopia (no blue cones) | #00576C | 0.140 |
| Achromatopsia (no color) | #4A4A4A | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B3BA8
#3B3BA8
oklch(42.4% 0.17 276.3)
- #5C4D00
#5C4D00
oklch(42.3% 0.087 96.2)
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 #3B3BA8, closest first.
No curated palette has a color within ΔE 0.04 of #3B3BA8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.034
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.052
- Majorelle Blue #3F37C9 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Indigo Blue #3A18B1 ΔE 0.059
- Cobalt #1E488F ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
Use #3B3BA8 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.