#2F81DD
Closest named color: Water Blue (#0E87CC). oklch(60.1% 0.16 254.1), rgb(47, 129, 221).
Aa
Black text reads best on this color (5.30:1).
About this color
#2F81DD is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.160 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.036 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #2F81DD |
| RGB | rgb(47, 129, 221) |
| HSL | hsl(212, 72%, 53%) |
| OKLCH | oklch(60.1% 0.16 254.1) |
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 #2F81DD | 3.95:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #2F81DD | 5.30:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #2F81DD text on white | 3.95:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #2F81DD text on black | 5.30:1 | AA | Lc -35.2 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9EC4F3
oklch(80.9% 0.078 254)
-
Step 400
400
#67A3ED
oklch(70.6% 0.126 254.4)
-
Step 500
500 (this color)
#2F81DD
oklch(60.1% 0.16 254.1)
-
Step 600
600
#0872D5
oklch(55.6% 0.174 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#034E96
oklch(42.7% 0.135 254.2)
-
Step 900
900
#114277
oklch(37.8% 0.104 253.8)
-
Step 950
950
#0C2746
oklch(27.1% 0.066 254)
#2F81DD 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) | #5388E1 | 0.038 |
| Deuteranopia (no green cones) | #3479DB | 0.021 |
| Tritanopia (no blue cones) | #0097A4 | 0.121 |
| Achromatopsia (no color) | #808080 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F81DD
#2F81DD
oklch(60.1% 0.16 254.1)
- #AD7300
#AD7300
oklch(60.1% 0.127 74.1)
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 #2F81DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.036
- Dark Sky Blue #448EE4 ΔE 0.041
- Windows Blue #3778BF ΔE 0.048
- Clear Blue #247AFD ΔE 0.054
- Soft Blue #6488EA ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.059
- Cool Blue #4984B8 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.062
Use #2F81DD 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.