#375464
Closest named color: YInMn Blue (#415A77). oklch(43% 0.044 233.3), rgb(55, 84, 100).
Aa
White text reads best on this color (8.03:1).
About this color
#375464 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.044 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.037 away. White text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #375464 |
| RGB | rgb(55, 84, 100) |
| HSL | hsl(201, 29%, 30%) |
| OKLCH | oklch(43% 0.044 233.3) |
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 #375464 | 8.03:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #375464 | 2.61:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #375464 text on white | 8.03:1 | AAA | Lc 87.8 | Fine for body text |
| #375464 text on black | 2.61:1 | Fails | Lc -14.4 | Not readable |
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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CF
oklch(80.9% 0.026 233.1)
-
Step 400
400
#88A5B6
oklch(70.6% 0.041 233.9)
-
Step 500
500
#6A8FA4
oklch(63% 0.052 233.5)
-
Step 600
600
#51798F
oklch(55.5% 0.056 233.2)
-
Step 700
700
#42667A
oklch(49.1% 0.052 233.6)
-
Step 800
800 (this color)
#375464
oklch(43% 0.044 233.3)
-
Step 900
900
#2F4551
oklch(37.7% 0.034 232.7)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#375464 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) | #4C5365 | 0.029 |
| Deuteranopia (no green cones) | #464E64 | 0.026 |
| Tritanopia (no blue cones) | #255859 | 0.032 |
| Achromatopsia (no color) | #505050 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375464
#375464
oklch(43% 0.044 233.3)
- #634939
#634939
oklch(42.9% 0.044 52.8)
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 #375464, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.038
- Petrol #005F6A ΔE 0.044
- Deep Teal #00555A ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- Charcoal #264653 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.058
Use #375464 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.