#375B8A
Closest named color: Light Navy Blue (#2E5A88). oklch(46.6% 0.087 255.6), rgb(55, 91, 138).
Aa
White text reads best on this color (6.94:1).
About this color
#375B8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.087 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.011 away. White text reads best on it, at 6.94:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #375B8A |
| RGB | rgb(55, 91, 138) |
| HSL | hsl(214, 43%, 38%) |
| OKLCH | oklch(46.6% 0.087 255.6) |
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 #375B8A | 6.94:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #375B8A | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #375B8A text on white | 6.94:1 | AA | Lc 83.9 | Fine for body text |
| #375B8A text on black | 3.02:1 | AA large text | Lc -18.1 | 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 700.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC2DC
oklch(80.8% 0.042 256.3)
-
Step 400
400
#85A3CB
oklch(70.7% 0.068 255.7)
-
Step 500
500
#668CBD
oklch(63.2% 0.086 255.1)
-
Step 600
600
#4D75AA
oklch(55.6% 0.094 255.8)
-
Step 700
700 (this color)
#375B8A
oklch(46.6% 0.087 255.6)
-
Step 800
800
#335076
oklch(42.6% 0.073 255.6)
-
Step 900
900
#2D435F
oklch(37.8% 0.056 254.9)
-
Step 950
950
#1B2738
oklch(27% 0.036 257.1)
#375B8A 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) | #475E8C | 0.022 |
| Deuteranopia (no green cones) | #3D5689 | 0.015 |
| Tritanopia (no blue cones) | #00666C | 0.076 |
| Achromatopsia (no color) | #5A5A5A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375B8A
#375B8A
oklch(46.6% 0.087 255.6)
- #765216
#765216
oklch(46.7% 0.088 75.5)
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 #375B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.011
- Denim Blue #3B5B92 ΔE 0.014
- Denim #3B638C ΔE 0.025
- Dusky Blue #475F94 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.032
- Dusk Blue #26538D ΔE 0.032
- Dusk #4E5481 ΔE 0.034
- Twilight #4E518B ΔE 0.039
Use #375B8A 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.