#305172
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.068 249.7), rgb(48, 81, 114).
Aa
White text reads best on this color (8.24:1).
About this color
#305172 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.068 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.036 away. White text reads best on it, at 8.24:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #305172 |
| RGB | rgb(48, 81, 114) |
| HSL | hsl(210, 41%, 32%) |
| OKLCH | oklch(42.5% 0.068 249.7) |
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 #305172 | 8.24:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #305172 | 2.54:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #305172 text on white | 8.24:1 | AAA | Lc 88.4 | Fine for body text |
| #305172 text on black | 2.54:1 | Fails | Lc -13.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3DA
oklch(80.9% 0.04 250.7)
-
Step 400
400
#83A4C7
oklch(70.7% 0.063 250.2)
-
Step 500
500
#638DB9
oklch(63% 0.081 250.3)
-
Step 600
600
#4977A5
oklch(55.6% 0.088 249.7)
-
Step 700
700
#3A648D
oklch(49.1% 0.081 249.3)
-
Step 800
800 (this color)
#305172
oklch(42.5% 0.068 249.7)
-
Step 900
900
#2B445D
oklch(37.8% 0.053 249.4)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#305172 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) | #435273 | 0.025 |
| Deuteranopia (no green cones) | #3B4C71 | 0.019 |
| Tritanopia (no blue cones) | #02595C | 0.060 |
| Achromatopsia (no color) | #4F4F4F | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305172
#305172
oklch(42.5% 0.068 249.7)
- #664722
#664722
oklch(42.4% 0.067 69.1)
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 #305172, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.037
- Light Navy #155084 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk Blue #26538D ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.048
- Dusk #4E5481 ΔE 0.049
- Dusty Grape #545775 ΔE 0.054
Use #305172 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.