#3D4DB3
Closest named color: Blue Blue (#2242C7). oklch(46.8% 0.162 271.9), rgb(61, 77, 179).
Aa
White text reads best on this color (7.21:1).
About this color
#3D4DB3 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.162 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 7.21:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.91:1 |
| White text | 7.21:1 |
Values
| HEX | #3D4DB3 |
| RGB | rgb(61, 77, 179) |
| HSL | hsl(232, 49%, 47%) |
| OKLCH | oklch(46.8% 0.162 271.9) |
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 #3D4DB3 | 7.21:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #3D4DB3 | 2.91:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #3D4DB3 text on white | 7.21:1 | AAA | Lc 84.6 | Fine for body text |
| #3D4DB3 text on black | 2.91:1 | Fails | Lc -17.4 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#AEBEF4
oklch(80.8% 0.079 271.7)
-
Step 400
400
#859BEF
oklch(70.7% 0.126 271.7)
-
Step 500
500
#697FE9
oklch(63% 0.16 272.2)
-
Step 600
600
#5266D7
oklch(55.6% 0.174 272)
-
Step 700
700 (this color)
#3D4DB3
oklch(46.8% 0.162 271.9)
-
Step 800
800
#374597
oklch(42.6% 0.134 272.2)
-
Step 900
900
#2F3B78
oklch(37.6% 0.104 272.1)
-
Step 950
950
#1B2346
oklch(26.9% 0.066 271.6)
#3D4DB3 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) | #005DB6 | 0.051 |
| Deuteranopia (no green cones) | #0052B1 | 0.042 |
| Tritanopia (no blue cones) | #006678 | 0.135 |
| Achromatopsia (no color) | #575757 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4DB3
#3D4DB3
oklch(46.8% 0.162 271.9)
- #6E5800
#6E5800
oklch(46.9% 0.096 91.9)
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 #3D4DB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Blueberry #464196 ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.057
- Blurple #5539CC ΔE 0.063
- Sapphire #2138AB ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.066
- Iris #6258C4 ΔE 0.068
Use #3D4DB3 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.