#30548B
Closest named color: Dusk Blue (#26538D). oklch(44.7% 0.1 258.6), rgb(48, 84, 139).
Aa
White text reads best on this color (7.59:1).
About this color
#30548B is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.100 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.011 away. White text reads best on it, at 7.59:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #30548B |
| RGB | rgb(48, 84, 139) |
| HSL | hsl(216, 49%, 37%) |
| OKLCH | oklch(44.7% 0.1 258.6) |
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 #30548B | 7.59:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #30548B | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #30548B text on white | 7.59:1 | AAA | Lc 86.2 | Fine for body text |
| #30548B text on black | 2.76:1 | Fails | Lc -15.9 | Dividers and decoration only |
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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#AAC2E7
oklch(80.9% 0.059 259)
-
Step 400
400
#7DA2DB
oklch(70.7% 0.093 258.8)
-
Step 500
500
#5B8AD1
oklch(63.1% 0.119 258.4)
-
Step 600
600
#4172BE
oklch(55.5% 0.13 258.9)
-
Step 700
700
#3360A4
oklch(49.2% 0.12 258.5)
-
Step 800
800 (this color)
#30548B
oklch(44.7% 0.1 258.6)
-
Step 900
900
#27426A
oklch(37.8% 0.076 258.1)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#30548B 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) | #3C588D | 0.019 |
| Deuteranopia (no green cones) | #2F508A | 0.012 |
| Tritanopia (no blue cones) | #006169 | 0.083 |
| Achromatopsia (no color) | #545454 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30548B
#30548B
oklch(44.7% 0.1 258.6)
- #704D00
#704D00
oklch(44.7% 0.093 78.6)
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 #30548B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.011
- Light Navy Blue #2E5A88 ΔE 0.019
- Denim Blue #3B5B92 ΔE 0.027
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.034
- Twilight #4E518B ΔE 0.038
- Dusk #4E5481 ΔE 0.041
- Cobalt #1E488F ΔE 0.043
Use #30548B 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.