#383972
Closest named color: Twilight Blue (#0A437A). oklch(37.4% 0.096 280), rgb(56, 57, 114).
Aa
White text reads best on this color (10.51:1).
About this color
#383972 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.096 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.050 away. White text reads best on it, at 10.51:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #383972 |
| RGB | rgb(56, 57, 114) |
| HSL | hsl(239, 34%, 33%) |
| OKLCH | oklch(37.4% 0.096 280) |
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 #383972 | 10.51:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #383972 | 1.99:1 | Fails | Lc 9.7 | Not readable |
| #383972 text on white | 10.51:1 | AAA | Lc 94.2 | Preferred for body text |
| #383972 text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D3D7F4
oklch(88.5% 0.04 279.3)
-
Step 300
300
#B7BCEF
oklch(80.9% 0.072 280.3)
-
Step 400
400
#9398E7
oklch(70.7% 0.115 280.2)
-
Step 500
500
#797DE0
oklch(63.2% 0.147 279.6)
-
Step 600
600
#6464CD
oklch(55.7% 0.158 279.9)
-
Step 700
700
#5352B2
oklch(49.1% 0.149 279.9)
-
Step 800
800
#444490
oklch(42.8% 0.122 279.9)
-
Step 900
900 (this color)
#383972
oklch(37.4% 0.096 280)
-
Step 950
950
#212243
oklch(26.9% 0.061 280.2)
#383972 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) | #204174 | 0.035 |
| Deuteranopia (no green cones) | #1C3D71 | 0.036 |
| Tritanopia (no blue cones) | #234550 | 0.082 |
| Achromatopsia (no color) | #3F3F3F | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383972
#383972
oklch(37.4% 0.096 280)
- #4B4100
#4B4100
oklch(37.4% 0.078 99.4)
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 #383972, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.051
- Marine Blue #01386A ΔE 0.059
- Cobalt #1E488F ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.065
- Blueberry #464196 ΔE 0.067
- Light Navy #155084 ΔE 0.071
Use #383972 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.