#3B63AA
Closest named color: Mid Blue (#276AB3). oklch(50.6% 0.122 261), rgb(59, 99, 170).
Aa
White text reads best on this color (5.91:1).
About this color
#3B63AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.122 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.025 away. White text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #3B63AA |
| RGB | rgb(59, 99, 170) |
| HSL | hsl(218, 48%, 45%) |
| OKLCH | oklch(50.6% 0.122 261) |
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 #3B63AA | 5.91:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #3B63AA | 3.55:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #3B63AA text on white | 5.91:1 | AA | Lc 79.3 | Fine for body text |
| #3B63AA text on black | 3.55:1 | AA large text | Lc -22.5 | 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
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ABC2E8
oklch(81% 0.06 260.4)
-
Step 400
400
#7FA1DC
oklch(70.7% 0.095 261.1)
-
Step 500
500
#5F89D2
oklch(63.2% 0.12 260.9)
-
Step 600
600
#4571BF
oklch(55.5% 0.131 261)
-
Step 700
700 (this color)
#3B63AA
oklch(50.6% 0.122 261)
-
Step 800
800
#2E4D86
oklch(42.6% 0.102 261.6)
-
Step 900
900
#29416B
oklch(37.7% 0.078 260.9)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#3B63AA 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) | #436AAD | 0.023 |
| Deuteranopia (no green cones) | #325FA9 | 0.015 |
| Tritanopia (no blue cones) | #00737E | 0.101 |
| Achromatopsia (no color) | #646464 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B63AA
#3B63AA
oklch(50.6% 0.122 261)
- #835D00
#835D00
oklch(50.5% 0.104 80.8)
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 #3B63AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.025
- French Blue #436BAD ΔE 0.025
- Dusky Blue #475F94 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.047
- Muted Blue #3B719F ΔE 0.048
- Denim #3B638C ΔE 0.049
- Peacock Blue #016795 ΔE 0.052
Use #3B63AA 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.