#375681
Closest named color: Light Navy Blue (#2E5A88). oklch(44.9% 0.08 256.8), rgb(55, 86, 129).
Aa
White text reads best on this color (7.47:1).
About this color
#375681 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.080 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.016 away. White text reads best on it, at 7.47:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.81:1 |
| White text | 7.47:1 |
Values
| HEX | #375681 |
| RGB | rgb(55, 86, 129) |
| HSL | hsl(215, 40%, 36%) |
| OKLCH | oklch(44.9% 0.08 256.8) |
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 #375681 | 7.47:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #375681 | 2.81:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #375681 text on white | 7.47:1 | AAA | Lc 85.8 | Fine for body text |
| #375681 text on black | 2.81:1 | Fails | Lc -16.2 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#AEC2DF
oklch(80.8% 0.047 257.6)
-
Step 400
400
#83A3CF
oklch(70.8% 0.074 256.4)
-
Step 500
500
#638BC3
oklch(63.1% 0.096 256.9)
-
Step 600
600
#4A74AF
oklch(55.5% 0.104 257)
-
Step 700
700
#3B6197
oklch(49% 0.097 257.3)
-
Step 800
800 (this color)
#375681
oklch(44.9% 0.08 256.8)
-
Step 900
900
#2B4262
oklch(37.6% 0.062 256.8)
-
Step 950
950
#1A273A
oklch(27% 0.04 257.8)
#375681 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) | #455983 | 0.021 |
| Deuteranopia (no green cones) | #3B5280 | 0.012 |
| Tritanopia (no blue cones) | #056065 | 0.072 |
| Achromatopsia (no color) | #555555 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375681
#375681
oklch(44.9% 0.08 256.8)
- #6E4F1A
#6E4F1A
oklch(45.1% 0.08 77.2)
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 #375681, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.016
- YInMn Blue #415A77 ΔE 0.026
- Dusk Blue #26538D ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.030
- Dusk #4E5481 ΔE 0.030
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.038
- Twilight #4E518B ΔE 0.039
Use #375681 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.