#284ABA
Closest named color: Blue Blue (#2242C7). oklch(45.7% 0.181 266.2), rgb(40, 74, 186).
Aa
White text reads best on this color (7.55:1).
About this color
#284ABA is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.181 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.028 away. White text reads best on it, at 7.55:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.77:1 |
| White text | 7.55:1 |
Values
| HEX | #284ABA |
| RGB | rgb(40, 74, 186) |
| HSL | hsl(226, 65%, 44%) |
| OKLCH | oklch(45.7% 0.181 266.2) |
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 #284ABA | 7.55:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #284ABA | 2.77:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #284ABA text on white | 7.55:1 | AAA | Lc 85.6 | Fine for body text |
| #284ABA text on black | 2.77:1 | Fails | Lc -16.4 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#335FFA
oklch(55.6% 0.235 266.2)
-
Step 700
700
#274DDA
oklch(49.1% 0.219 266.2)
-
Step 800
800 (this color)
#284ABA
oklch(45.7% 0.181 266.2)
-
Step 900
900
#1E398B
oklch(37.8% 0.14 265.9)
-
Step 950
950
#122251
oklch(27% 0.089 266.3)
#284ABA 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) | #005BBE | 0.042 |
| Deuteranopia (no green cones) | #004EB8 | 0.021 |
| Tritanopia (no blue cones) | #00677B | 0.142 |
| Achromatopsia (no color) | #545454 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284ABA
#284ABA
oklch(45.7% 0.181 266.2)
- #6E5300
#6E5300
oklch(45.8% 0.094 86.8)
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 #284ABA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.028
- Majorelle Blue #3F37C9 ΔE 0.048
- Sapphire #2138AB ΔE 0.051
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Blueberry #464196 ΔE 0.069
- Blurple #5539CC ΔE 0.069
- Cobalt #1E488F ΔE 0.071
- Warm Blue #4B57DB ΔE 0.076
Use #284ABA 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.