#30506F
Closest named color: Deep Sea Blue (#015482). oklch(42.1% 0.064 248.8), rgb(48, 80, 111).
Aa
White text reads best on this color (8.39:1).
About this color
#30506F is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.064 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.039 away. White text reads best on it, at 8.39:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #30506F |
| RGB | rgb(48, 80, 111) |
| HSL | hsl(210, 40%, 31%) |
| OKLCH | oklch(42.1% 0.064 248.8) |
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 #30506F | 8.39:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #30506F | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #30506F text on white | 8.39:1 | AAA | Lc 88.8 | Fine for body text |
| #30506F text on black | 2.50:1 | Fails | Lc -13.4 | 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
#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
#AEC3D8
oklch(80.8% 0.038 248.3)
-
Step 400
400
#84A4C5
oklch(70.7% 0.06 249.5)
-
Step 500
500
#648EB6
oklch(63.2% 0.076 247.9)
-
Step 600
600
#4B77A2
oklch(55.6% 0.083 249)
-
Step 700
700
#3C648B
oklch(49.1% 0.078 249.1)
-
Step 800
800 (this color)
#30506F
oklch(42.1% 0.064 248.8)
-
Step 900
900
#2C445B
oklch(37.8% 0.05 248.2)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#30506F 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) | #435170 | 0.025 |
| Deuteranopia (no green cones) | #3B4B6E | 0.019 |
| Tritanopia (no blue cones) | #08575B | 0.055 |
| Achromatopsia (no color) | #4D4D4D | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30506F
#30506F
oklch(42.1% 0.064 248.8)
- #644624
#644624
oklch(42% 0.064 68)
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 #30506F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.040
- Light Navy #155084 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.049
- Dusk #4E5481 ΔE 0.053
- Charcoal #264653 ΔE 0.054
Use #30506F 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.