#3A4DA8
Closest named color: Blueberry (#464196). oklch(45.7% 0.147 270.6), rgb(58, 77, 168).
Aa
White text reads best on this color (7.48:1).
About this color
#3A4DA8 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.147 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.042 away. White text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #3A4DA8 |
| RGB | rgb(58, 77, 168) |
| HSL | hsl(230, 49%, 44%) |
| OKLCH | oklch(45.7% 0.147 270.6) |
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 #3A4DA8 | 7.48:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #3A4DA8 | 2.80:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #3A4DA8 text on white | 7.48:1 | AAA | Lc 85.7 | Fine for body text |
| #3A4DA8 text on black | 2.80:1 | Fails | Lc -16.4 | 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
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEF9
oklch(80.8% 0.086 270.6)
-
Step 400
400
#809AF6
oklch(70.6% 0.138 270.6)
-
Step 500
500
#637EF2
oklch(63% 0.176 270.8)
-
Step 600
600
#4C64E1
oklch(55.6% 0.191 270.7)
-
Step 700
700
#3E52C4
oklch(49.1% 0.178 270.8)
-
Step 800
800 (this color)
#3A4DA8
oklch(45.7% 0.147 270.6)
-
Step 900
900
#2C3A7E
oklch(37.7% 0.116 271.1)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#3A4DA8 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) | #0E5AAB | 0.043 |
| Deuteranopia (no green cones) | #0050A6 | 0.040 |
| Tritanopia (no blue cones) | #006373 | 0.123 |
| Achromatopsia (no color) | #555555 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4DA8
#3A4DA8
oklch(45.7% 0.147 270.6)
- #6B5400
#6B5400
oklch(45.7% 0.093 90.3)
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 #3A4DA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.042
- Dusk Blue #26538D ΔE 0.053
- Cobalt #1E488F ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.057
- Twilight #4E518B ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.061
- Blue Blue #2242C7 ΔE 0.063
- Sapphire #2138AB ΔE 0.063
Use #3A4DA8 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.