#3752CC
Closest named color: Warm Blue (#4B57DB). oklch(49.4% 0.191 268.7), rgb(55, 82, 204).
Aa
White text reads best on this color (6.47:1).
About this color
#3752CC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.191 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.037 away. White text reads best on it, at 6.47:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #3752CC |
| RGB | rgb(55, 82, 204) |
| HSL | hsl(229, 59%, 51%) |
| OKLCH | oklch(49.4% 0.191 268.7) |
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 #3752CC | 6.47:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #3752CC | 3.24:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #3752CC text on white | 6.47:1 | AA | Lc 81.6 | Fine for body text |
| #3752CC text on black | 3.24:1 | AA large text | Lc -20.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FC
oklch(88.6% 0.051 268.1)
-
Step 300
300
#A8BFFD
oklch(81% 0.092 268.6)
-
Step 400
400
#7A9BFC
oklch(70.7% 0.147 268.3)
-
Step 500
500
#5B7EFA
oklch(63.1% 0.189 268.7)
-
Step 600
600
#4463E9
oklch(55.6% 0.205 268.8)
-
Step 700
700 (this color)
#3752CC
oklch(49.4% 0.191 268.7)
-
Step 800
800
#2D43A4
oklch(42.7% 0.158 268.9)
-
Step 900
900
#273A82
oklch(37.7% 0.123 268.7)
-
Step 950
950
#17234C
oklch(27.1% 0.077 268.6)
#3752CC 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) | #0065D0 | 0.049 |
| Deuteranopia (no green cones) | #0057CA | 0.032 |
| Tritanopia (no blue cones) | #007187 | 0.152 |
| Achromatopsia (no color) | #5E5E5E | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3752CC
#3752CC
oklch(49.4% 0.191 268.7)
- #795E00
#795E00
oklch(49.5% 0.101 89.1)
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 #3752CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.037
- Blue Blue #2242C7 ΔE 0.046
- Majorelle Blue #3F37C9 ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Azul #1D5DEC ΔE 0.056
- Blurple #5539CC ΔE 0.060
- Iris #6258C4 ΔE 0.063
- Neon Blue #4361EE ΔE 0.066
Use #3752CC 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.