#0369EF
Closest named color: Cerulean Blue (#056EEE). oklch(55.6% 0.217 259.4), rgb(3, 105, 239).
Aa
White text reads best on this color (4.91:1).
About this color
#0369EF is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.217 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.012 away. White text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.217) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #0369EF |
| RGB | rgb(3, 105, 239) |
| HSL | hsl(214, 98%, 47%) |
| OKLCH | oklch(55.6% 0.217 259.4) |
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 #0369EF | 4.91:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #0369EF | 4.27:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #0369EF text on white | 4.91:1 | AA | Lc 73.1 | Content text, not long reading |
| #0369EF text on black | 4.27:1 | AA large text | Lc -28.6 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#64A0FF
oklch(70.8% 0.153 259.2)
-
Step 500
500
#3584FF
oklch(63.2% 0.199 259.3)
-
Step 600
600 (this color)
#0369EF
oklch(55.6% 0.217 259.4)
-
Step 700
700
#0058CB
oklch(49.1% 0.193 259.2)
-
Step 800
800
#0147A8
oklch(42.6% 0.168 259.5)
-
Step 900
900
#0E3D85
oklch(37.6% 0.131 259.5)
-
Step 950
950
#0A254E
oklch(27.1% 0.082 258.9)
#0369EF 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) | #007BF4 | 0.045 |
| Deuteranopia (no green cones) | #0067EC | 0.007 |
| Tritanopia (no blue cones) | #008BA2 | 0.164 |
| Achromatopsia (no color) | #707070 | 0.218 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0369EF
#0369EF
oklch(55.6% 0.217 259.4)
- #976A00
#976A00
oklch(55.7% 0.116 79.3)
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 #0369EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.012
- Bright Blue #0165FC ΔE 0.022
- Azul #1D5DEC ΔE 0.027
- Neon Blue #4361EE ΔE 0.037
- Royal Blue #4169E1 ΔE 0.039
- Clear Blue #247AFD ΔE 0.050
- Electric Blue #0652FF ΔE 0.055
- Warm Blue #4B57DB ΔE 0.062
Use #0369EF 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.