#305BE0
Closest named color: Azul (#1D5DEC). oklch(52.5% 0.208 265.7), rgb(48, 91, 224).
Aa
White text reads best on this color (5.67:1).
About this color
#305BE0 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.208 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.022 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #305BE0 |
| RGB | rgb(48, 91, 224) |
| HSL | hsl(225, 74%, 53%) |
| OKLCH | oklch(52.5% 0.208 265.7) |
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 #305BE0 | 5.67:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #305BE0 | 3.69:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #305BE0 text on white | 5.67:1 | AA | Lc 77.7 | Fine for body text |
| #305BE0 text on black | 3.69:1 | AA large text | Lc -24.0 | 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
#A4C0FE
oklch(81% 0.093 265.6)
-
Step 400
400
#749CFE
oklch(70.7% 0.15 265.9)
-
Step 500
500
#5180FC
oklch(63.2% 0.192 265.6)
-
Step 600
600 (this color)
#305BE0
oklch(52.5% 0.208 265.7)
-
Step 700
700
#2B53CC
oklch(49.1% 0.193 265.6)
-
Step 800
800
#2445A5
oklch(42.8% 0.16 265.5)
-
Step 900
900
#213B83
oklch(37.7% 0.125 265.7)
-
Step 950
950
#14234D
oklch(27% 0.08 266.3)
#305BE0 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) | #006FE4 | 0.048 |
| Deuteranopia (no green cones) | #005FDD | 0.023 |
| Tritanopia (no blue cones) | #007D95 | 0.162 |
| Achromatopsia (no color) | #676767 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305BE0
#305BE0
oklch(52.5% 0.208 265.7)
- #866500
#866500
oklch(52.6% 0.108 86.1)
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 #305BE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.022
- Warm Blue #4B57DB ΔE 0.029
- Neon Blue #4361EE ΔE 0.034
- Royal Blue #4169E1 ΔE 0.040
- Cerulean Blue #056EEE ΔE 0.048
- Bright Blue #0165FC ΔE 0.049
- Electric Blue #0652FF ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.071
Use #305BE0 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.