#375463
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.9% 0.043 231.6), rgb(55, 84, 99).
Aa
White text reads best on this color (8.04:1).
About this color
#375463 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.043 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.036 away. White text reads best on it, at 8.04:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.61:1 |
| White text | 8.04:1 |
Values
| HEX | #375463 |
| RGB | rgb(55, 84, 99) |
| HSL | hsl(200, 29%, 30%) |
| OKLCH | oklch(42.9% 0.043 231.6) |
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 #375463 | 8.04:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #375463 | 2.61:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #375463 text on white | 8.04:1 | AAA | Lc 87.8 | Fine for body text |
| #375463 text on black | 2.61:1 | Fails | Lc -14.3 | 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
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#88A6B5
oklch(70.8% 0.04 229.6)
-
Step 500
500
#6A8FA3
oklch(63% 0.051 232.2)
-
Step 600
600
#51798E
oklch(55.5% 0.055 232)
-
Step 700
700
#426679
oklch(49.1% 0.051 232.3)
-
Step 800
800 (this color)
#375463
oklch(42.9% 0.043 231.6)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#375463 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) | #4D5364 | 0.030 |
| Deuteranopia (no green cones) | #464E63 | 0.026 |
| Tritanopia (no blue cones) | #255859 | 0.031 |
| Achromatopsia (no color) | #505050 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375463
#375463
oklch(42.9% 0.043 231.6)
- #63493A
#63493A
oklch(42.9% 0.043 51.2)
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 #375463, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.036
- YInMn Blue #415A77 ΔE 0.038
- Petrol #005F6A ΔE 0.044
- Deep Teal #00555A ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.050
- Dusty Grape #545775 ΔE 0.053
- Charcoal #264653 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.060
Use #375463 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.