#305EB8
Closest named color: Mid Blue (#276AB3). oklch(50% 0.151 262.1), rgb(48, 94, 184).
Aa
White text reads best on this color (6.14:1).
About this color
#305EB8 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.151 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.035 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #305EB8 |
| RGB | rgb(48, 94, 184) |
| HSL | hsl(220, 59%, 45%) |
| OKLCH | oklch(50% 0.151 262.1) |
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 #305EB8 | 6.14:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #305EB8 | 3.41:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #305EB8 text on white | 6.14:1 | AA | Lc 80.3 | Fine for body text |
| #305EB8 text on black | 3.41:1 | AA large text | Lc -21.6 | 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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A7C1F1
oklch(80.8% 0.074 262.5)
-
Step 400
400
#78A0EA
oklch(70.7% 0.118 262.1)
-
Step 500
500
#5686E3
oklch(63% 0.15 262.3)
-
Step 600
600
#3B6ED1
oklch(55.6% 0.163 262)
-
Step 700
700 (this color)
#305EB8
oklch(50% 0.151 262.1)
-
Step 800
800
#264B93
oklch(42.7% 0.126 262.1)
-
Step 900
900
#243F75
oklch(37.7% 0.098 262.6)
-
Step 950
950
#152544
oklch(26.8% 0.062 262.4)
#305EB8 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) | #2B68BB | 0.026 |
| Deuteranopia (no green cones) | #005CB6 | 0.027 |
| Tritanopia (no blue cones) | #007382 | 0.119 |
| Achromatopsia (no color) | #626262 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305EB8
#305EB8
oklch(50% 0.151 262.1)
- #805C00
#805C00
oklch(49.9% 0.103 82)
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 #305EB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.035
- French Blue #436BAD ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.062
- Warm Blue #4B57DB ΔE 0.065
- Iris #6258C4 ΔE 0.065
- Peacock Blue #016795 ΔE 0.070
- Flat Blue #3C73A8 ΔE 0.071
Use #305EB8 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.