#374186
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.115 273.9), rgb(55, 65, 134).
Aa
White text reads best on this color (9.28:1).
About this color
#374186 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.115 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.029 away. White text reads best on it, at 9.28:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #374186 |
| RGB | rgb(55, 65, 134) |
| HSL | hsl(232, 42%, 37%) |
| OKLCH | oklch(40.5% 0.115 273.9) |
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 #374186 | 9.28:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #374186 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #374186 text on white | 9.28:1 | AAA | Lc 91.2 | Preferred for body text |
| #374186 text on black | 2.26:1 | Fails | Lc -11.2 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B3BEED
oklch(80.9% 0.068 274.5)
-
Step 400
400
#8C9BE4
oklch(70.7% 0.108 274.4)
-
Step 500
500
#7081DC
oklch(63.1% 0.138 273.8)
-
Step 600
600
#5A69C9
oklch(55.7% 0.148 273.9)
-
Step 700
700
#4A57AE
oklch(49.2% 0.138 273.8)
-
Step 800
800 (this color)
#374186
oklch(40.5% 0.115 273.9)
-
Step 900
900
#333C71
oklch(37.6% 0.091 274)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#374186 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) | #1D4B88 | 0.036 |
| Deuteranopia (no green cones) | #104485 | 0.038 |
| Tritanopia (no blue cones) | #04515D | 0.102 |
| Achromatopsia (no color) | #474747 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374186
#374186
oklch(40.5% 0.115 273.9)
- #584800
#584800
oklch(40.6% 0.083 94.4)
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 #374186, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Cobalt #1E488F ΔE 0.032
- Blueberry #464196 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.048
- Light Navy #155084 ΔE 0.050
- Dusk Blue #26538D ΔE 0.051
- Twilight #4E518B ΔE 0.060
- Deep Sea Blue #015482 ΔE 0.064
Use #374186 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.