#3A63AF
Closest named color: Mid Blue (#276AB3). oklch(50.9% 0.129 261.6), rgb(58, 99, 175).
Aa
White text reads best on this color (5.85:1).
About this color
#3A63AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.129 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.022 away. White text reads best on it, at 5.85:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #3A63AF |
| RGB | rgb(58, 99, 175) |
| HSL | hsl(219, 50%, 46%) |
| OKLCH | oklch(50.9% 0.129 261.6) |
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 #3A63AF | 5.85:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #3A63AF | 3.58:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #3A63AF text on white | 5.85:1 | AA | Lc 79.0 | Fine for body text |
| #3A63AF text on black | 3.58:1 | AA large text | Lc -22.8 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#AAC2EA
oklch(81% 0.063 260.6)
-
Step 400
400
#7EA1DF
oklch(70.8% 0.099 261.5)
-
Step 500
500
#5D88D6
oklch(63.1% 0.127 261.5)
-
Step 600
600
#4370C4
oklch(55.5% 0.14 261.7)
-
Step 700
700 (this color)
#3A63AF
oklch(50.9% 0.129 261.6)
-
Step 800
800
#2C4D89
oklch(42.7% 0.107 261.3)
-
Step 900
900
#28406E
oklch(37.6% 0.085 262.3)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#3A63AF 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) | #3F6AB2 | 0.021 |
| Deuteranopia (no green cones) | #2C60AD | 0.017 |
| Tritanopia (no blue cones) | #007480 | 0.106 |
| Achromatopsia (no color) | #656565 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A63AF
#3A63AF
oklch(50.9% 0.129 261.6)
- #845E00
#845E00
oklch(50.8% 0.105 81)
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 #3A63AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.022
- French Blue #436BAD ΔE 0.026
- Dusky Blue #475F94 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.048
- Flat Blue #3C73A8 ΔE 0.050
- Muted Blue #3B719F ΔE 0.052
- Denim #3B638C ΔE 0.057
- Peacock Blue #016795 ΔE 0.057
Use #3A63AF 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.