#375D8F
Closest named color: Denim Blue (#3B5B92). oklch(47.4% 0.092 255.8), rgb(55, 93, 143).
Aa
White text reads best on this color (6.72:1).
About this color
#375D8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.092 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.009 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #375D8F |
| RGB | rgb(55, 93, 143) |
| HSL | hsl(214, 44%, 39%) |
| OKLCH | oklch(47.4% 0.092 255.8) |
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 #375D8F | 6.72:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #375D8F | 3.12:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #375D8F text on white | 6.72:1 | AA | Lc 83.0 | Fine for body text |
| #375D8F text on black | 3.12:1 | AA large text | Lc -19.0 | 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
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AEC2DE
oklch(80.8% 0.045 256.8)
-
Step 400
400
#83A3CD
oklch(70.7% 0.071 255.4)
-
Step 500
500
#648CC0
oklch(63.2% 0.091 255.3)
-
Step 600
600
#4B75AD
oklch(55.7% 0.1 256)
-
Step 700
700 (this color)
#375D8F
oklch(47.4% 0.092 255.8)
-
Step 800
800
#325078
oklch(42.7% 0.076 256)
-
Step 900
900
#2C4361
oklch(37.8% 0.059 255.5)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#375D8F 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) | #486091 | 0.023 |
| Deuteranopia (no green cones) | #3C588E | 0.015 |
| Tritanopia (no blue cones) | #00686F | 0.078 |
| Achromatopsia (no color) | #5C5C5C | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375D8F
#375D8F
oklch(47.4% 0.092 255.8)
- #795411
#795411
oklch(47.4% 0.092 76.6)
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 #375D8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.009
- Light Navy Blue #2E5A88 ΔE 0.017
- Denim #3B638C ΔE 0.021
- Dusky Blue #475F94 ΔE 0.022
- Dusk Blue #26538D ΔE 0.036
- Peacock Blue #016795 ΔE 0.037
- Dusk #4E5481 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.039
Use #375D8F 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.