#30528D
Closest named color: Dusk Blue (#26538D). oklch(44.4% 0.105 260.7), rgb(48, 82, 141).
Aa
White text reads best on this color (7.72:1).
About this color
#30528D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.105 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.010 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #30528D |
| RGB | rgb(48, 82, 141) |
| HSL | hsl(218, 49%, 37%) |
| OKLCH | oklch(44.4% 0.105 260.7) |
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 #30528D | 7.72:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #30528D | 2.71:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #30528D text on white | 7.72:1 | AAA | Lc 86.6 | Fine for body text |
| #30528D text on black | 2.71:1 | Fails | Lc -15.5 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7DA1DE
oklch(70.6% 0.098 260.7)
-
Step 500
500
#5C89D5
oklch(63.2% 0.125 260.4)
-
Step 600
600
#4271C2
oklch(55.6% 0.136 260.5)
-
Step 700
700
#345EA8
oklch(49% 0.128 260.8)
-
Step 800
800 (this color)
#30528D
oklch(44.4% 0.105 260.7)
-
Step 900
900
#27416D
oklch(37.8% 0.082 260.3)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#30528D 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) | #37578F | 0.018 |
| Deuteranopia (no green cones) | #2A4F8C | 0.012 |
| Tritanopia (no blue cones) | #005F68 | 0.087 |
| Achromatopsia (no color) | #535353 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30528D
#30528D
oklch(44.4% 0.105 260.7)
- #6D4D00
#6D4D00
oklch(44.3% 0.092 81.1)
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 #30528D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.010
- Light Navy Blue #2E5A88 ΔE 0.027
- Light Navy #155084 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.031
- Deep Sea Blue #015482 ΔE 0.036
- Cobalt #1E488F ΔE 0.037
- Twilight #4E518B ΔE 0.039
- Dusk #4E5481 ΔE 0.044
Use #30528D 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.