#375180
Closest named color: Dusk Blue (#26538D). oklch(43.7% 0.084 261.5), rgb(55, 81, 128).
Aa
White text reads best on this color (7.92:1).
About this color
#375180 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.084 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.026 away. White text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.65:1 |
| White text | 7.92:1 |
Values
| HEX | #375180 |
| RGB | rgb(55, 81, 128) |
| HSL | hsl(219, 40%, 36%) |
| OKLCH | oklch(43.7% 0.084 261.5) |
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 #375180 | 7.92:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #375180 | 2.65:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #375180 text on white | 7.92:1 | AAA | Lc 87.3 | Fine for body text |
| #375180 text on black | 2.65:1 | Fails | Lc -14.8 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AFC1E1
oklch(80.8% 0.05 262)
-
Step 400
400
#85A1D2
oklch(70.6% 0.079 261.4)
-
Step 500
500
#6789C7
oklch(63.1% 0.102 261.9)
-
Step 600
600
#4E72B3
oklch(55.5% 0.11 261.5)
-
Step 700
700
#3F609A
oklch(49.2% 0.101 261)
-
Step 800
800 (this color)
#375180
oklch(43.7% 0.084 261.5)
-
Step 900
900
#2E4164
oklch(37.6% 0.065 262)
-
Step 950
950
#1B263B
oklch(26.9% 0.042 262.7)
#375180 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) | #3E5582 | 0.016 |
| Deuteranopia (no green cones) | #354E7F | 0.010 |
| Tritanopia (no blue cones) | #0A5B62 | 0.075 |
| Achromatopsia (no color) | #515151 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375180
#375180
oklch(43.7% 0.084 261.5)
- #694C0D
#694C0D
oklch(43.7% 0.084 81.2)
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 #375180, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.027
- Light Navy #155084 ΔE 0.031
- Dusk #4E5481 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.037
- Twilight #4E518B ΔE 0.037
- YInMn Blue #415A77 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.039
Use #375180 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.