#2E81E4
Closest named color: Dark Sky Blue (#448EE4). oklch(60.5% 0.17 255.3), rgb(46, 129, 228).
Aa
Black text reads best on this color (5.37:1).
About this color
#2E81E4 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.170 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.041 away. Black text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #2E81E4 |
| RGB | rgb(46, 129, 228) |
| HSL | hsl(213, 77%, 54%) |
| OKLCH | oklch(60.5% 0.17 255.3) |
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 #2E81E4 | 3.90:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #2E81E4 | 5.37:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #2E81E4 text on white | 3.90:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #2E81E4 text on black | 5.37:1 | AA | Lc -35.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9DC4F6
oklch(81% 0.083 254.9)
-
Step 400
400
#65A3F2
oklch(70.8% 0.133 255.2)
-
Step 500
500 (this color)
#2E81E4
oklch(60.5% 0.17 255.3)
-
Step 600
600
#0270DB
oklch(55.5% 0.184 255.4)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#014D9A
oklch(42.8% 0.142 255.3)
-
Step 900
900
#0F417A
oklch(37.7% 0.11 255)
-
Step 950
950
#0B2648
oklch(26.9% 0.071 255.8)
#2E81E4 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) | #4E8AE8 | 0.038 |
| Deuteranopia (no green cones) | #2979E2 | 0.022 |
| Tritanopia (no blue cones) | #0099A7 | 0.130 |
| Achromatopsia (no color) | #818181 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E81E4
#2E81E4
oklch(60.5% 0.17 255.3)
- #AD7500
#AD7500
oklch(60.5% 0.127 75.6)
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 #2E81E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.041
- Clear Blue #247AFD ΔE 0.044
- Water Blue #0E87CC ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.052
- Soft Blue #6488EA ΔE 0.055
- Windows Blue #3778BF ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.058
- Royal Blue #4169E1 ΔE 0.060
Use #2E81E4 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.