#375679
Closest named color: YInMn Blue (#415A77). oklch(44.5% 0.069 252.3), rgb(55, 86, 121).
Aa
White text reads best on this color (7.58:1).
About this color
#375679 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.069 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.019 away. White text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #375679 |
| RGB | rgb(55, 86, 121) |
| HSL | hsl(212, 37%, 35%) |
| OKLCH | oklch(44.5% 0.069 252.3) |
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 #375679 | 7.58:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #375679 | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #375679 text on white | 7.58:1 | AAA | Lc 86.2 | Fine for body text |
| #375679 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC3DA
oklch(80.9% 0.039 252)
-
Step 400
400
#84A4C8
oklch(70.8% 0.064 251.7)
-
Step 500
500
#658DBA
oklch(63.2% 0.081 252)
-
Step 600
600
#4B76A6
oklch(55.5% 0.089 252.2)
-
Step 700
700
#3C638F
oklch(49.1% 0.084 252.5)
-
Step 800
800 (this color)
#375679
oklch(44.5% 0.069 252.3)
-
Step 900
900
#2C435D
oklch(37.6% 0.053 252.2)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#375679 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) | #48587B | 0.024 |
| Deuteranopia (no green cones) | #405178 | 0.017 |
| Tritanopia (no blue cones) | #135E62 | 0.060 |
| Achromatopsia (no color) | #545454 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375679
#375679
oklch(44.5% 0.069 252.3)
- #6B4D26
#6B4D26
oklch(44.4% 0.068 71.7)
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 #375679, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.025
- Dusk #4E5481 ΔE 0.035
- Dusk Blue #26538D ΔE 0.040
- Dusty Grape #545775 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.042
- Light Navy #155084 ΔE 0.042
Use #375679 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.