#3753D2
Closest named color: Warm Blue (#4B57DB). oklch(50.1% 0.198 268.6), rgb(55, 83, 210).
Aa
White text reads best on this color (6.30:1).
About this color
#3753D2 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.198 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.030 away. White text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #3753D2 |
| RGB | rgb(55, 83, 210) |
| HSL | hsl(229, 63%, 52%) |
| OKLCH | oklch(50.1% 0.198 268.6) |
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 #3753D2 | 6.30:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #3753D2 | 3.33:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #3753D2 text on white | 6.30:1 | AA | Lc 80.8 | Fine for body text |
| #3753D2 text on black | 3.33:1 | AA large text | Lc -21.1 | 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
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CAD9FD
oklch(88.6% 0.052 267.4)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#597DFE
oklch(63.1% 0.196 268.5)
-
Step 600
600
#4262ED
oklch(55.6% 0.212 268.6)
-
Step 700
700 (this color)
#3753D2
oklch(50.1% 0.198 268.6)
-
Step 800
800
#2B42A7
oklch(42.7% 0.164 268.6)
-
Step 900
900
#263984
oklch(37.6% 0.128 268.7)
-
Step 950
950
#16224D
oklch(26.9% 0.081 268.7)
#3753D2 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) | #0067D6 | 0.050 |
| Deuteranopia (no green cones) | #0059D0 | 0.031 |
| Tritanopia (no blue cones) | #00738A | 0.156 |
| Achromatopsia (no color) | #606060 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3753D2
#3753D2
oklch(50.1% 0.198 268.6)
- #7B5F00
#7B5F00
oklch(50% 0.102 88.5)
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 #3753D2, closest first.
No curated palette has a color within ΔE 0.04 of #3753D2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.030
- Azul #1D5DEC ΔE 0.047
- Blue Blue #2242C7 ΔE 0.051
- Neon Blue #4361EE ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- Blurple #5539CC ΔE 0.062
Use #3753D2 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.