#305ABB
Closest named color: Mid Blue (#276AB3). oklch(49.4% 0.16 263.9), rgb(48, 90, 187).
Aa
White text reads best on this color (6.35:1).
About this color
#305ABB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.160 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.046 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #305ABB |
| RGB | rgb(48, 90, 187) |
| HSL | hsl(222, 59%, 46%) |
| OKLCH | oklch(49.4% 0.16 263.9) |
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 #305ABB | 6.35:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #305ABB | 3.30:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #305ABB text on white | 6.35:1 | AA | Lc 81.2 | Fine for body text |
| #305ABB text on black | 3.30:1 | AA large text | Lc -20.7 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF7
oklch(88.6% 0.043 263.7)
-
Step 300
300
#A7C1F4
oklch(80.9% 0.078 263.6)
-
Step 400
400
#799FEE
oklch(70.8% 0.124 263.9)
-
Step 500
500
#5785E8
oklch(63.2% 0.157 263.7)
-
Step 600
600
#3D6CD7
oklch(55.7% 0.172 263.8)
-
Step 700
700 (this color)
#305ABB
oklch(49.4% 0.16 263.9)
-
Step 800
800
#284997
oklch(42.6% 0.134 264.2)
-
Step 900
900
#243E78
oklch(37.6% 0.104 263.9)
-
Step 950
950
#152546
oklch(27% 0.065 263.2)
#305ABB 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) | #1A66BE | 0.032 |
| Deuteranopia (no green cones) | #0059B9 | 0.026 |
| Tritanopia (no blue cones) | #007182 | 0.126 |
| Achromatopsia (no color) | #5F5F5F | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305ABB
#305ABB
oklch(49.4% 0.16 263.9)
- #7C5B00
#7C5B00
oklch(49.2% 0.101 83.9)
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 #305ABB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.046
- Warm Blue #4B57DB ΔE 0.059
- French Blue #436BAD ΔE 0.060
- Blue Blue #2242C7 ΔE 0.064
- Iris #6258C4 ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.067
- Dusky Blue #475F94 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.072
Use #305ABB 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.