#3623A0
Closest named color: Indigo Blue (#3A18B1). oklch(37.6% 0.187 279.3), rgb(54, 35, 160).
Aa
White text reads best on this color (11.02:1).
About this color
#3623A0 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.187 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Indigo Blue (#3A18B1), ΔE 0.029 away. White text reads best on it, at 11.02:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Indigo Blue (#3A18B1) |
| Black text | 1.90:1 |
| White text | 11.02:1 |
Values
| HEX | #3623A0 |
| RGB | rgb(54, 35, 160) |
| HSL | hsl(249, 64%, 38%) |
| OKLCH | oklch(37.6% 0.187 279.3) |
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 #3623A0 | 11.02:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #3623A0 | 1.90:1 | Fails | Lc 9.4 | Not readable |
| #3623A0 text on white | 11.02:1 | AAA | Lc 94.5 | Preferred for body text |
| #3623A0 text on black | 1.90:1 | Fails | Lc -8.1 | Not readable |
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 900.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8E93FF
oklch(70.6% 0.156 279.6)
-
Step 500
500
#7573FF
oklch(63% 0.202 279.5)
-
Step 600
600
#604DFF
oklch(55.6% 0.25 279.3)
-
Step 700
700
#5312FD
oklch(49.1% 0.29 279.3)
-
Step 800
800
#431BCC
oklch(42.7% 0.24 279.4)
-
Step 900
900 (this color)
#3623A0
oklch(37.6% 0.187 279.3)
-
Step 950
950
#1F185E
oklch(27.1% 0.119 279.5)
#3623A0 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) | #0041A4 | 0.070 |
| Deuteranopia (no green cones) | #00379E | 0.057 |
| Tritanopia (no blue cones) | #004861 | 0.150 |
| Achromatopsia (no color) | #3C3C3C | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3623A0
#3623A0
oklch(37.6% 0.187 279.3)
- #4C4200
#4C4200
oklch(37.8% 0.078 99.5)
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 #3623A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo Blue #3A18B1 ΔE 0.029
- Imperial Purple #480CA8 ΔE 0.039
- Sapphire #2138AB ΔE 0.049
- Ultramarine #2000B1 ΔE 0.058
- Chrysanthemum #560BAD ΔE 0.064
- Royal #0C1793 ΔE 0.069
- Blueberry #464196 ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.075
Use #3623A0 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.