#37386A
Closest named color: Prussian Blue (#1D3557). oklch(36.6% 0.085 280.5), rgb(55, 56, 106).
Aa
White text reads best on this color (10.84:1).
About this color
#37386A is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.085 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.052 away. White text reads best on it, at 10.84:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.93:1 |
| White text | 10.84:1 |
Values
| HEX | #37386A |
| RGB | rgb(55, 56, 106) |
| HSL | hsl(239, 32%, 32%) |
| OKLCH | oklch(36.6% 0.085 280.5) |
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 #37386A | 10.84:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #37386A | 1.93:1 | Fails | Lc 8.9 | Not readable |
| #37386A text on white | 10.84:1 | AAA | Lc 95.0 | Preferred for body text |
| #37386A text on black | 1.93:1 | Fails | Lc -7.6 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B8BDEA
oklch(81% 0.064 279.9)
-
Step 400
400
#9599DF
oklch(70.7% 0.102 280.9)
-
Step 500
500
#7C7FD6
oklch(63.2% 0.129 280.5)
-
Step 600
600
#6666C3
oklch(55.6% 0.141 280.8)
-
Step 700
700
#5554A9
oklch(49.1% 0.133 280.9)
-
Step 800
800
#454689
oklch(42.8% 0.109 280.1)
-
Step 900
900 (this color)
#37386A
oklch(36.6% 0.085 280.5)
-
Step 950
950
#222340
oklch(27.1% 0.053 280.7)
#37386A 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) | #243F6C | 0.030 |
| Deuteranopia (no green cones) | #213B69 | 0.030 |
| Tritanopia (no blue cones) | #26424C | 0.072 |
| Achromatopsia (no color) | #3D3D3D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37386A
#37386A
oklch(36.6% 0.085 280.5)
- #483F00
#483F00
oklch(36.6% 0.076 100.2)
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 #37386A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.054
- Marine Blue #01386A ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.065
- Charcoal #264653 ΔE 0.070
- Marine #042E60 ΔE 0.072
Use #37386A 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.