#305AD9
Closest named color: Warm Blue (#4B57DB). oklch(51.7% 0.2 265.7), rgb(48, 90, 217).
Aa
White text reads best on this color (5.84:1).
About this color
#305AD9 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.200 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.029 away. White text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #305AD9 |
| RGB | rgb(48, 90, 217) |
| HSL | hsl(225, 69%, 52%) |
| OKLCH | oklch(51.7% 0.2 265.7) |
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 #305AD9 | 5.84:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #305AD9 | 3.59:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #305AD9 text on white | 5.84:1 | AA | Lc 78.6 | Fine for body text |
| #305AD9 text on black | 3.59:1 | AA large text | Lc -23.2 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FE
oklch(88.5% 0.054 265.8)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#4F7FFF
oklch(63.1% 0.197 265.6)
-
Step 600
600
#3664EF
oklch(55.7% 0.215 265.7)
-
Step 700
700 (this color)
#305AD9
oklch(51.7% 0.2 265.7)
-
Step 800
800
#2344A8
oklch(42.8% 0.165 265.7)
-
Step 900
900
#203B85
oklch(37.8% 0.129 265.5)
-
Step 950
950
#13234E
oklch(27% 0.082 265.8)
#305AD9 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) | #006DDD | 0.046 |
| Deuteranopia (no green cones) | #005DD7 | 0.023 |
| Tritanopia (no blue cones) | #007A91 | 0.156 |
| Achromatopsia (no color) | #656565 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305AD9
#305AD9
oklch(51.7% 0.2 265.7)
- #836300
#836300
oklch(51.8% 0.106 86.4)
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 #305AD9, closest first.
No curated palette has a color within ΔE 0.04 of #305AD9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.029
- Azul #1D5DEC ΔE 0.031
- Neon Blue #4361EE ΔE 0.043
- Royal Blue #4169E1 ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.056
- Bright Blue #0165FC ΔE 0.059
- Electric Blue #0652FF ΔE 0.064
- Blue Blue #2242C7 ΔE 0.066
Use #305AD9 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.