#365DE4
Closest named color: Azul (#1D5DEC). oklch(53.5% 0.209 266.7), rgb(54, 93, 228).
Aa
White text reads best on this color (5.46:1).
About this color
#365DE4 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.209 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.021 away. White text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #365DE4 |
| RGB | rgb(54, 93, 228) |
| HSL | hsl(227, 76%, 55%) |
| OKLCH | oklch(53.5% 0.209 266.7) |
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 #365DE4 | 5.46:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #365DE4 | 3.84:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #365DE4 text on white | 5.46:1 | AA | Lc 76.6 | Fine for body text |
| #365DE4 text on black | 3.84:1 | AA large text | Lc -25.1 | 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 600.
-
Step 50
50
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A5BFFE
oklch(80.8% 0.094 267)
-
Step 400
400
#769CFE
oklch(70.8% 0.15 266.6)
-
Step 500
500
#547FFC
oklch(63.1% 0.192 266.6)
-
Step 600
600 (this color)
#365DE4
oklch(53.5% 0.209 266.7)
-
Step 700
700
#2F52CD
oklch(49.2% 0.194 266.7)
-
Step 800
800
#2744A6
oklch(42.8% 0.162 266.7)
-
Step 900
900
#233B83
oklch(37.8% 0.125 266.5)
-
Step 950
950
#15234D
oklch(27% 0.08 267.1)
#365DE4 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) | #0072E8 | 0.051 |
| Deuteranopia (no green cones) | #0061E1 | 0.027 |
| Tritanopia (no blue cones) | #007F97 | 0.164 |
| Achromatopsia (no color) | #696969 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #365DE4
#365DE4
oklch(53.5% 0.209 266.7)
- #896800
#896800
oklch(53.6% 0.11 86.7)
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 #365DE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.021
- Neon Blue #4361EE ΔE 0.023
- Warm Blue #4B57DB ΔE 0.027
- Royal Blue #4169E1 ΔE 0.033
- Cerulean Blue #056EEE ΔE 0.043
- Bright Blue #0165FC ΔE 0.044
- Electric Blue #0652FF ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.066
Use #365DE4 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.