#3A5EB3
Closest named color: Mid Blue (#276AB3). oklch(50.1% 0.141 264.6), rgb(58, 94, 179).
Aa
White text reads best on this color (6.11:1).
About this color
#3A5EB3 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.141 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.034 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #3A5EB3 |
| RGB | rgb(58, 94, 179) |
| HSL | hsl(222, 51%, 46%) |
| OKLCH | oklch(50.1% 0.141 264.6) |
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 #3A5EB3 | 6.11:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #3A5EB3 | 3.43:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #3A5EB3 text on white | 6.11:1 | AA | Lc 80.2 | Fine for body text |
| #3A5EB3 text on black | 3.43:1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1EE
oklch(81% 0.068 264.5)
-
Step 400
400
#7F9FE5
oklch(70.7% 0.109 265)
-
Step 500
500
#5F86DE
oklch(63.2% 0.14 264.7)
-
Step 600
600
#466ECB
oklch(55.7% 0.151 264.5)
-
Step 700
700 (this color)
#3A5EB3
oklch(50.1% 0.141 264.6)
-
Step 800
800
#2E4B8E
oklch(42.7% 0.116 264.4)
-
Step 900
900
#293F72
oklch(37.7% 0.092 264.8)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#3A5EB3 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) | #3268B6 | 0.027 |
| Deuteranopia (no green cones) | #185DB1 | 0.027 |
| Tritanopia (no blue cones) | #007280 | 0.116 |
| Achromatopsia (no color) | #626262 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5EB3
#3A5EB3
oklch(50.1% 0.141 264.6)
- #7E5E00
#7E5E00
oklch(50.1% 0.103 85.3)
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 #3A5EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.034
- French Blue #436BAD ΔE 0.041
- Dusky Blue #475F94 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.052
- Iris #6258C4 ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.065
- Peacock Blue #016795 ΔE 0.067
- Denim #3B638C ΔE 0.067
Use #3A5EB3 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.