#3C4DB9
Closest named color: Blue Blue (#2242C7). oklch(47.2% 0.17 271.5), rgb(60, 77, 185).
Aa
White text reads best on this color (7.10:1).
About this color
#3C4DB9 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.170 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.046 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #3C4DB9 |
| RGB | rgb(60, 77, 185) |
| HSL | hsl(232, 51%, 48%) |
| OKLCH | oklch(47.2% 0.17 271.5) |
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 #3C4DB9 | 7.10:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #3C4DB9 | 2.95:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #3C4DB9 text on white | 7.10:1 | AAA | Lc 84.2 | Fine for body text |
| #3C4DB9 text on black | 2.95:1 | Fails | Lc -17.8 | 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
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#ADBEF7
oklch(80.9% 0.083 271.6)
-
Step 400
400
#839AF3
oklch(70.6% 0.133 271.7)
-
Step 500
500
#667FEE
oklch(63.2% 0.168 271.3)
-
Step 600
600
#4F65DD
oklch(55.6% 0.184 271.3)
-
Step 700
700 (this color)
#3C4DB9
oklch(47.2% 0.17 271.5)
-
Step 800
800
#35459B
oklch(42.8% 0.141 271.3)
-
Step 900
900
#2E3B7B
oklch(37.8% 0.109 271.6)
-
Step 950
950
#1B2348
oklch(27% 0.069 271.9)
#3C4DB9 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) | #005EBD | 0.051 |
| Deuteranopia (no green cones) | #0053B7 | 0.041 |
| Tritanopia (no blue cones) | #00687B | 0.141 |
| Achromatopsia (no color) | #585858 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4DB9
#3C4DB9
oklch(47.2% 0.17 271.5)
- #6F5900
#6F5900
oklch(47.3% 0.097 92.1)
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 #3C4DB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Majorelle Blue #3F37C9 ΔE 0.051
- Blurple #5539CC ΔE 0.058
- Blueberry #464196 ΔE 0.062
- Warm Blue #4B57DB ΔE 0.062
- Bluey Purple #6241C7 ΔE 0.063
- Iris #6258C4 ΔE 0.066
Use #3C4DB9 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.