#306ADC
Closest named color: Royal Blue (#4169E1). oklch(55.1% 0.185 262), rgb(48, 106, 220).
Aa
White text reads best on this color (4.97:1).
About this color
#306ADC is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.185 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.017 away. White text reads best on it, at 4.97:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.22:1 |
| White text | 4.97:1 |
Values
| HEX | #306ADC |
| RGB | rgb(48, 106, 220) |
| HSL | hsl(220, 71%, 53%) |
| OKLCH | oklch(55.1% 0.185 262) |
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 #306ADC | 4.97:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #306ADC | 4.22:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #306ADC text on white | 4.97:1 | AA | Lc 73.9 | Content text, not long reading |
| #306ADC text on black | 4.22:1 | AA large text | Lc -27.8 | 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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F7
oklch(80.8% 0.084 262)
-
Step 400
400
#729FF3
oklch(70.6% 0.133 262.1)
-
Step 500
500
#4D85EF
oklch(63.1% 0.17 261.8)
-
Step 600
600 (this color)
#306ADC
oklch(55.1% 0.185 262)
-
Step 700
700
#2459C0
oklch(49.1% 0.172 261.9)
-
Step 800
800
#1F499C
oklch(42.7% 0.144 262.1)
-
Step 900
900
#1F3E7C
oklch(37.7% 0.112 262.4)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#306ADC 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) | #1978E0 | 0.035 |
| Deuteranopia (no green cones) | #0068DA | 0.023 |
| Tritanopia (no blue cones) | #008699 | 0.144 |
| Achromatopsia (no color) | #707070 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306ADC
#306ADC
oklch(55.1% 0.185 262)
- #936A00
#936A00
oklch(55.2% 0.114 81.8)
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 #306ADC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.017
- Cerulean Blue #056EEE ΔE 0.031
- Neon Blue #4361EE ΔE 0.038
- Azul #1D5DEC ΔE 0.044
- Warm Blue #4B57DB ΔE 0.048
- Bright Blue #0165FC ΔE 0.054
- Clear Blue #247AFD ΔE 0.061
- Windows Blue #3778BF ΔE 0.063
Use #306ADC 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.