#375779
Closest named color: YInMn Blue (#415A77). oklch(44.7% 0.068 250.9), rgb(55, 87, 121).
Aa
White text reads best on this color (7.49:1).
About this color
#375779 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.068 and its hue 251°. 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 7.49:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.80:1 |
| White text | 7.49:1 |
Values
| HEX | #375779 |
| RGB | rgb(55, 87, 121) |
| HSL | hsl(211, 37%, 35%) |
| OKLCH | oklch(44.7% 0.068 250.9) |
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 #375779 | 7.49:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #375779 | 2.80:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #375779 text on white | 7.49:1 | AAA | Lc 85.9 | Fine for body text |
| #375779 text on black | 2.80:1 | 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
#CFDBE8
oklch(88.6% 0.022 250.2)
-
Step 300
300
#AEC3DA
oklch(80.9% 0.04 250.7)
-
Step 400
400
#83A4C7
oklch(70.7% 0.063 250.2)
-
Step 500
500
#648DB9
oklch(63.1% 0.081 250.9)
-
Step 600
600
#4A77A5
oklch(55.7% 0.088 250.2)
-
Step 700
700
#3B638E
oklch(49% 0.083 251.5)
-
Step 800
800 (this color)
#375779
oklch(44.7% 0.068 250.9)
-
Step 900
900
#2C435D
oklch(37.6% 0.053 252.2)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#375779 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) | #49587B | 0.024 |
| Deuteranopia (no green cones) | #415278 | 0.018 |
| Tritanopia (no blue cones) | #135F63 | 0.059 |
| Achromatopsia (no color) | #555555 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375779
#375779
oklch(44.7% 0.068 250.9)
- #6C4E28
#6C4E28
oklch(44.8% 0.067 71.1)
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 #375779, 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 0.025
- Dusk #4E5481 ΔE 0.035
- Dusty Grape #545775 ΔE 0.039
- Dusk Blue #26538D ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.041
- Denim #3B638C ΔE 0.043
Use #375779 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.