#3B4DBA
Closest named color: Blue Blue (#2242C7). oklch(47.2% 0.172 271.1), rgb(59, 77, 186).
Aa
White text reads best on this color (7.10:1).
About this color
#3B4DBA is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.172 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.044 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #3B4DBA |
| RGB | rgb(59, 77, 186) |
| HSL | hsl(231, 52%, 48%) |
| OKLCH | oklch(47.2% 0.172 271.1) |
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 #3B4DBA | 7.10:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #3B4DBA | 2.95:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #3B4DBA text on white | 7.10:1 | AAA | Lc 84.2 | Fine for body text |
| #3B4DBA 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F9
oklch(88.5% 0.047 272.1)
-
Step 300
300
#ADBEF7
oklch(80.9% 0.083 271.6)
-
Step 400
400
#829BF3
oklch(70.7% 0.132 270.7)
-
Step 500
500
#657FEF
oklch(63.2% 0.17 271)
-
Step 600
600
#4E65DE
oklch(55.6% 0.185 271)
-
Step 700
700 (this color)
#3B4DBA
oklch(47.2% 0.172 271.1)
-
Step 800
800
#34459C
oklch(42.8% 0.142 270.8)
-
Step 900
900
#2D3B7C
oklch(37.8% 0.111 271)
-
Step 950
950
#1A2348
oklch(27% 0.07 270.8)
#3B4DBA 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) | #005EBE | 0.050 |
| Deuteranopia (no green cones) | #0053B8 | 0.039 |
| Tritanopia (no blue cones) | #00687C | 0.140 |
| Achromatopsia (no color) | #585858 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4DBA
#3B4DBA
oklch(47.2% 0.172 271.1)
- #705900
#705900
oklch(47.4% 0.097 91.3)
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 #3B4DBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Majorelle Blue #3F37C9 ΔE 0.050
- Blurple #5539CC ΔE 0.058
- Warm Blue #4B57DB ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.063
- Blueberry #464196 ΔE 0.064
- Iris #6258C4 ΔE 0.066
Use #3B4DBA 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.