#375189
Closest named color: Dusk Blue (#26538D). oklch(44.2% 0.098 264), rgb(55, 81, 137).
Aa
White text reads best on this color (7.77:1).
About this color
#375189 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.098 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.018 away. White text reads best on it, at 7.77:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #375189 |
| RGB | rgb(55, 81, 137) |
| HSL | hsl(221, 43%, 38%) |
| OKLCH | oklch(44.2% 0.098 264) |
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 #375189 | 7.77:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #375189 | 2.70:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #375189 text on white | 7.77:1 | AAA | Lc 86.8 | Fine for body text |
| #375189 text on black | 2.70:1 | Fails | Lc -15.3 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AEC1E6
oklch(80.9% 0.056 263.7)
-
Step 400
400
#84A0DA
oklch(70.7% 0.091 264.3)
-
Step 500
500
#6588D0
oklch(63.2% 0.116 263.7)
-
Step 600
600
#4C70BD
oklch(55.5% 0.127 263.8)
-
Step 700
700
#3E5DA3
oklch(49% 0.118 264.5)
-
Step 800
800 (this color)
#375189
oklch(44.2% 0.098 264)
-
Step 900
900
#2D406A
oklch(37.7% 0.076 264.6)
-
Step 950
950
#1A263E
oklch(27% 0.048 263.3)
#375189 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) | #39568B | 0.015 |
| Deuteranopia (no green cones) | #2E4F88 | 0.013 |
| Tritanopia (no blue cones) | #005D66 | 0.086 |
| Achromatopsia (no color) | #525252 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375189
#375189
oklch(44.2% 0.098 264)
- #6B4E00
#6B4E00
oklch(44.3% 0.091 83.8)
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 #375189, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.031
- Twilight #4E518B ΔE 0.032
- Light Navy #155084 ΔE 0.033
- Dusk #4E5481 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.040
- Cobalt #1E488F ΔE 0.041
Use #375189 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.