#30506E
Closest named color: YInMn Blue (#415A77). oklch(42% 0.063 248), rgb(48, 80, 110).
Aa
White text reads best on this color (8.40:1).
About this color
#30506E is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.063 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.040 away. White text reads best on it, at 8.40:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.49:1 |
| White text | 8.40:1 |
Values
| HEX | #30506E |
| RGB | rgb(48, 80, 110) |
| HSL | hsl(209, 39%, 31%) |
| OKLCH | oklch(42% 0.063 248) |
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 #30506E | 8.40:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #30506E | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #30506E text on white | 8.40:1 | AAA | Lc 88.9 | Fine for body text |
| #30506E text on black | 2.49:1 | Fails | Lc -13.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AFC3D8
oklch(80.9% 0.037 249.6)
-
Step 400
400
#84A4C4
oklch(70.6% 0.059 248.7)
-
Step 500
500
#648EB5
oklch(63.1% 0.075 247.3)
-
Step 600
600
#4B77A1
oklch(55.5% 0.082 248.4)
-
Step 700
700
#3C648A
oklch(49.1% 0.076 248.4)
-
Step 800
800 (this color)
#30506E
oklch(42% 0.063 248)
-
Step 900
900
#2C445B
oklch(37.8% 0.05 248.2)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#30506E 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) | #44516F | 0.026 |
| Deuteranopia (no green cones) | #3B4B6D | 0.019 |
| Tritanopia (no blue cones) | #0A575A | 0.054 |
| Achromatopsia (no color) | #4D4D4D | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30506E
#30506E
oklch(42% 0.063 248)
- #644625
#644625
oklch(42% 0.063 67.2)
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 #30506E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.041
- Light Navy #155084 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.047
- Dusk Blue #26538D ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.053
- Charcoal #264653 ΔE 0.053
Use #30506E 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.