#2F8CEF
Closest named color: Dark Sky Blue (#448EE4). oklch(63.6% 0.171 253.4), rgb(47, 140, 239).
Aa
Black text reads best on this color (6.11:1).
About this color
#2F8CEF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.171 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.023 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #2F8CEF |
| RGB | rgb(47, 140, 239) |
| HSL | hsl(211, 86%, 56%) |
| OKLCH | oklch(63.6% 0.171 253.4) |
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 #2F8CEF | 3.43:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #2F8CEF | 6.11:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #2F8CEF text on white | 3.43:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #2F8CEF text on black | 6.11:1 | AA | Lc -40.3 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF8
oklch(88.6% 0.047 252.4)
-
Step 300
300
#9BC4F6
oklch(80.9% 0.084 253.7)
-
Step 400
400
#61A4F2
oklch(70.8% 0.134 253.4)
-
Step 500
500 (this color)
#2F8CEF
oklch(63.6% 0.171 253.4)
-
Step 600
600
#0073D5
oklch(55.7% 0.173 253.3)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004E95
oklch(42.6% 0.134 253.6)
-
Step 900
900
#07417B
oklch(37.6% 0.113 253.8)
-
Step 950
950
#082748
oklch(27.1% 0.071 253.2)
#2F8CEF 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) | #5B94F3 | 0.043 |
| Deuteranopia (no green cones) | #3883ED | 0.023 |
| Tritanopia (no blue cones) | #00A4B2 | 0.129 |
| Achromatopsia (no color) | #8A8A8A | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F8CEF
#2F8CEF
oklch(63.6% 0.171 253.4)
- #BB7C00
#BB7C00
oklch(63.6% 0.135 73.6)
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 #2F8CEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.023
- Dodger Blue #1E90FF ΔE 0.024
- Chefchaouen Blue #4895EF ΔE 0.032
- Soft Blue #6488EA ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.053
- Clear Blue #247AFD ΔE 0.054
- Water Blue #0E87CC ΔE 0.057
- Cornflower #6A79F7 ΔE 0.068
Use #2F8CEF 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.