#375B80
Closest named color: Light Navy Blue (#2E5A88). oklch(46.1% 0.074 250.3), rgb(55, 91, 128).
Aa
White text reads best on this color (7.06:1).
About this color
#375B80 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.074 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.017 away. White text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #375B80 |
| RGB | rgb(55, 91, 128) |
| HSL | hsl(210, 40%, 36%) |
| OKLCH | oklch(46.1% 0.074 250.3) |
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 #375B80 | 7.06:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #375B80 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #375B80 text on white | 7.06:1 | AAA | Lc 84.4 | Fine for body text |
| #375B80 text on black | 2.97:1 | Fails | Lc -17.6 | 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 700.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B0C3D7
oklch(80.9% 0.035 249.6)
-
Step 400
400
#86A4C3
oklch(70.7% 0.056 249.5)
-
Step 500
500
#688DB4
oklch(63.1% 0.072 250.3)
-
Step 600
600
#4F77A0
oklch(55.7% 0.078 250)
-
Step 700
700 (this color)
#375B80
oklch(46.1% 0.074 250.3)
-
Step 800
800
#34516F
oklch(42.6% 0.061 250.2)
-
Step 900
900
#2E435A
oklch(37.6% 0.048 251.4)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#375B80 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) | #4C5C82 | 0.027 |
| Deuteranopia (no green cones) | #42557F | 0.020 |
| Tritanopia (no blue cones) | #046468 | 0.064 |
| Achromatopsia (no color) | #585858 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375B80
#375B80
oklch(46.1% 0.074 250.3)
- #725126
#725126
oklch(46.1% 0.074 71.4)
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 #375B80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.017
- YInMn Blue #415A77 ΔE 0.017
- Denim #3B638C ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.031
- Dusk #4E5481 ΔE 0.034
- Dusty Grape #545775 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.040
- Dusk Blue #26538D ΔE 0.040
Use #375B80 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.