#375B7D
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.07 248.2), rgb(55, 91, 125).
Aa
White text reads best on this color (7.10:1).
About this color
#375B7D is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.070 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.014 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #375B7D |
| RGB | rgb(55, 91, 125) |
| HSL | hsl(209, 39%, 35%) |
| OKLCH | oklch(45.9% 0.07 248.2) |
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 #375B7D | 7.10:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #375B7D | 2.95:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #375B7D text on white | 7.10:1 | AAA | Lc 84.5 | Fine for body text |
| #375B7D text on black | 2.95:1 | Fails | Lc -17.5 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DAE5
oklch(88.4% 0.019 250.6)
-
Step 300
300
#B0C3D6
oklch(80.9% 0.034 248.2)
-
Step 400
400
#87A4C1
oklch(70.7% 0.053 248.6)
-
Step 500
500
#688DB2
oklch(63% 0.07 249)
-
Step 600
600
#4F779D
oklch(55.6% 0.075 248.1)
-
Step 700
700 (this color)
#375B7D
oklch(45.9% 0.07 248.2)
-
Step 800
800
#35526D
oklch(42.8% 0.057 247.6)
-
Step 900
900
#2E4459
oklch(37.8% 0.046 248)
-
Step 950
950
#1B2834
oklch(27.1% 0.029 246.9)
#375B7D 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) | #4D5C7F | 0.029 |
| Deuteranopia (no green cones) | #44557C | 0.022 |
| Tritanopia (no blue cones) | #0B6367 | 0.059 |
| Achromatopsia (no color) | #585858 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375B7D
#375B7D
oklch(45.9% 0.07 248.2)
- #71502A
#71502A
oklch(45.8% 0.069 68.4)
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 #375B7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.014
- Light Navy Blue #2E5A88 ΔE 0.021
- Denim #3B638C ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.036
- Dusk #4E5481 ΔE 0.036
- Dusty Grape #545775 ΔE 0.039
- Dusk Blue #26538D ΔE 0.044
- Dusky Blue #475F94 ΔE 0.044
Use #375B7D 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.