#375D8E
Closest named color: Denim Blue (#3B5B92). oklch(47.3% 0.091 255.4), rgb(55, 93, 142).
Aa
White text reads best on this color (6.73:1).
About this color
#375D8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.091 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.011 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #375D8E |
| RGB | rgb(55, 93, 142) |
| HSL | hsl(214, 44%, 39%) |
| OKLCH | oklch(47.3% 0.091 255.4) |
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 #375D8E | 6.73:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #375D8E | 3.11:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #375D8E text on white | 6.73:1 | AA | Lc 83.0 | Fine for body text |
| #375D8E text on black | 3.11:1 | AA large text | Lc -18.9 | 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
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AEC2DD
oklch(80.8% 0.044 255.9)
-
Step 400
400
#83A3CC
oklch(70.7% 0.07 254.8)
-
Step 500
500
#648CBF
oklch(63.1% 0.089 254.9)
-
Step 600
600
#4B75AC
oklch(55.6% 0.098 255.6)
-
Step 700
700 (this color)
#375D8E
oklch(47.3% 0.091 255.4)
-
Step 800
800
#325078
oklch(42.7% 0.076 256)
-
Step 900
900
#2C4360
oklch(37.8% 0.058 254.7)
-
Step 950
950
#1A2738
oklch(26.9% 0.037 255.4)
#375D8E 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) | #486090 | 0.023 |
| Deuteranopia (no green cones) | #3D588D | 0.015 |
| Tritanopia (no blue cones) | #00686F | 0.076 |
| Achromatopsia (no color) | #5C5C5C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375D8E
#375D8E
oklch(47.3% 0.091 255.4)
- #795313
#795313
oklch(47.2% 0.091 75)
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 #375D8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.011
- Light Navy Blue #2E5A88 ΔE 0.016
- Denim #3B638C ΔE 0.020
- Dusky Blue #475F94 ΔE 0.023
- Dusk Blue #26538D ΔE 0.036
- Peacock Blue #016795 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.037
- Dusk #4E5481 ΔE 0.038
Use #375D8E 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.