#2A84DA
Closest named color: Water Blue (#0E87CC). oklch(60.5% 0.155 251.4), rgb(42, 132, 218).
Aa
Black text reads best on this color (5.41:1).
About this color
#2A84DA is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.155 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.027 away. Black text reads best on it, at 5.41:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.41:1 |
| White text | 3.88:1 |
Values
| HEX | #2A84DA |
| RGB | rgb(42, 132, 218) |
| HSL | hsl(209, 70%, 51%) |
| OKLCH | oklch(60.5% 0.155 251.4) |
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 #2A84DA | 3.88:1 | AA large text | Lc -71.3 | Content text, not long reading |
| Black text on #2A84DA | 5.41:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #2A84DA text on white | 3.88:1 | AA large text | Lc 65.8 | Content text, not long reading |
| #2A84DA text on black | 5.41:1 | AA | Lc -35.9 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9DC5F1
oklch(81% 0.076 251.2)
-
Step 400
400
#65A5EA
oklch(70.8% 0.121 251.5)
-
Step 500
500 (this color)
#2A84DA
oklch(60.5% 0.155 251.4)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0C4375
oklch(37.8% 0.101 251.2)
-
Step 950
950
#0A2744
oklch(26.8% 0.064 251.5)
#2A84DA 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) | #5A8ADD | 0.045 |
| Deuteranopia (no green cones) | #3D7AD8 | 0.027 |
| Tritanopia (no blue cones) | #0099A4 | 0.116 |
| Achromatopsia (no color) | #818181 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A84DA
#2A84DA
oklch(60.5% 0.155 251.4)
- #B17200
#B17200
oklch(60.4% 0.13 71.3)
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 #2A84DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.037
- Windows Blue #3778BF ΔE 0.047
- Cool Blue #4984B8 ΔE 0.055
- Soft Blue #6488EA ΔE 0.059
- Steel Blue #4682B4 ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.059
- Chefchaouen Blue #4895EF ΔE 0.060
Use #2A84DA 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.