#37395F
Closest named color: Prussian Blue (#1D3557). oklch(36.1% 0.065 280.3), rgb(55, 57, 95).
Aa
White text reads best on this color (10.97:1).
About this color
#37395F is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.065 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.043 away. White text reads best on it, at 10.97:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.91:1 |
| White text | 10.97:1 |
Values
| HEX | #37395F |
| RGB | rgb(55, 57, 95) |
| HSL | hsl(237, 27%, 29%) |
| OKLCH | oklch(36.1% 0.065 280.3) |
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 #37395F | 10.97:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #37395F | 1.91:1 | Fails | Lc 8.5 | Not readable |
| #37395F text on white | 10.97:1 | AAA | Lc 95.4 | Preferred for body text |
| #37395F text on black | 1.91:1 | Fails | Lc -7.3 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EB
oklch(88.6% 0.026 278.7)
-
Step 300
300
#BABEE0
oklch(80.9% 0.048 280)
-
Step 400
400
#979BD1
oklch(70.6% 0.079 280.9)
-
Step 500
500
#7E82C5
oklch(63.1% 0.1 280.5)
-
Step 600
600
#686BB2
oklch(55.7% 0.109 280.4)
-
Step 700
700
#565999
oklch(49.1% 0.101 279.9)
-
Step 800
800
#47497C
oklch(42.8% 0.084 280.5)
-
Step 900
900 (this color)
#37395F
oklch(36.1% 0.065 280.3)
-
Step 950
950
#23243A
oklch(27% 0.041 281.3)
#37395F 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) | #2C3E61 | 0.020 |
| Deuteranopia (no green cones) | #2A3B5E | 0.020 |
| Tritanopia (no blue cones) | #2B4047 | 0.057 |
| Achromatopsia (no color) | #3C3C3C | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37395F
#37395F
oklch(36.1% 0.065 280.3)
- #453E0F
#453E0F
oklch(36.1% 0.065 100.7)
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 #37395F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Charcoal #264653 ΔE 0.055
- Onyx #343A40 ΔE 0.057
- Marine Blue #01386A ΔE 0.058
- Gunmetal #293241 ΔE 0.060
- Twilight Blue #0A437A ΔE 0.062
Use #37395F 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.