#305283
Closest named color: Dusk Blue (#26538D). oklch(43.7% 0.091 257.6), rgb(48, 82, 131).
Aa
White text reads best on this color (7.89:1).
About this color
#305283 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.091 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.018 away. White text reads best on it, at 7.89:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.66:1 |
| White text | 7.89:1 |
Values
| HEX | #305283 |
| RGB | rgb(48, 82, 131) |
| HSL | hsl(215, 46%, 35%) |
| OKLCH | oklch(43.7% 0.091 257.6) |
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 #305283 | 7.89:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #305283 | 2.66:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #305283 text on white | 7.89:1 | AAA | Lc 87.2 | Fine for body text |
| #305283 text on black | 2.66:1 | Fails | Lc -14.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ACC2E3
oklch(80.8% 0.053 258.4)
-
Step 400
400
#7FA2D5
oklch(70.6% 0.085 257.7)
-
Step 500
500
#5F8BCA
oklch(63.2% 0.107 257.4)
-
Step 600
600
#4574B7
oklch(55.7% 0.117 257.4)
-
Step 700
700
#36619E
oklch(49.2% 0.109 257.4)
-
Step 800
800 (this color)
#305283
oklch(43.7% 0.091 257.6)
-
Step 900
900
#294267
oklch(37.7% 0.071 258)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#305283 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) | #3D5685 | 0.021 |
| Deuteranopia (no green cones) | #324E82 | 0.012 |
| Tritanopia (no blue cones) | #005D64 | 0.076 |
| Achromatopsia (no color) | #515151 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305283
#305283
oklch(43.7% 0.091 257.6)
- #6D4A01
#6D4A01
oklch(43.7% 0.091 77.5)
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 #305283, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.023
- Light Navy #155084 ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.037
- Dusk #4E5481 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.041
- Twilight #4E518B ΔE 0.042
Use #305283 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.