#375778
Closest named color: YInMn Blue (#415A77). oklch(44.7% 0.066 250.2), rgb(55, 87, 120).
Aa
White text reads best on this color (7.50:1).
About this color
#375778 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.066 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.017 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #375778 |
| RGB | rgb(55, 87, 120) |
| HSL | hsl(210, 37%, 34%) |
| OKLCH | oklch(44.7% 0.066 250.2) |
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 #375778 | 7.50:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #375778 | 2.79:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #375778 text on white | 7.50:1 | AAA | Lc 86.0 | Fine for body text |
| #375778 text on black | 2.79:1 | Fails | Lc -16.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#84A4C6
oklch(70.7% 0.061 250.2)
-
Step 500
500
#648DB8
oklch(63% 0.079 250.3)
-
Step 600
600
#4B77A4
oklch(55.7% 0.086 250.1)
-
Step 700
700
#3C648D
oklch(49.2% 0.08 250.3)
-
Step 800
800 (this color)
#375778
oklch(44.7% 0.066 250.2)
-
Step 900
900
#2C445C
oklch(37.8% 0.051 249.3)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#375778 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) | #4A5879 | 0.025 |
| Deuteranopia (no green cones) | #415277 | 0.018 |
| Tritanopia (no blue cones) | #145F62 | 0.059 |
| Achromatopsia (no color) | #555555 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375778
#375778
oklch(44.7% 0.066 250.2)
- #6C4E29
#6C4E29
oklch(44.8% 0.066 70.5)
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 #375778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.017
- Light Navy Blue #2E5A88 ΔE 0.026
- Dusk #4E5481 ΔE 0.036
- Dusty Grape #545775 ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.042
- Dusk Blue #26538D ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.043
- Denim #3B638C ΔE 0.044
Use #375778 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.