#3A5EB5
Closest named color: Mid Blue (#276AB3). oklch(50.2% 0.144 264.8), rgb(58, 94, 181).
Aa
White text reads best on this color (6.09:1).
About this color
#3A5EB5 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.144 and its hue 265°. 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 6.09:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #3A5EB5 |
| RGB | rgb(58, 94, 181) |
| HSL | hsl(222, 51%, 47%) |
| OKLCH | oklch(50.2% 0.144 264.8) |
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 #3A5EB5 | 6.09:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #3A5EB5 | 3.44:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #3A5EB5 text on white | 6.09:1 | AA | Lc 80.1 | Fine for body text |
| #3A5EB5 text on black | 3.44:1 | AA large text | Lc -21.7 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ABC1EF
oklch(81% 0.07 264.9)
-
Step 400
400
#7E9FE6
oklch(70.7% 0.111 264.7)
-
Step 500
500
#5E85DF
oklch(63% 0.143 264.9)
-
Step 600
600
#456DCD
oklch(55.6% 0.155 264.8)
-
Step 700
700 (this color)
#3A5EB5
oklch(50.2% 0.144 264.8)
-
Step 800
800
#2E4B90
oklch(42.9% 0.119 264.7)
-
Step 900
900
#293F73
oklch(37.8% 0.093 265)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#3A5EB5 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) | #3068B8 | 0.027 |
| Deuteranopia (no green cones) | #135DB3 | 0.030 |
| Tritanopia (no blue cones) | #007281 | 0.117 |
| Achromatopsia (no color) | #626262 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5EB5
#3A5EB5
oklch(50.2% 0.144 264.8)
- #7F5E00
#7F5E00
oklch(50.2% 0.103 84.6)
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 #3A5EB5, 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 0.042
- Dusky Blue #475F94 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.056
- Iris #6258C4 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.066
- Flat Blue #3C73A8 ΔE 0.067
- Peacock Blue #016795 ΔE 0.070
Use #3A5EB5 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.