#2781FD
Closest named color: Clear Blue (#247AFD). oklch(62.1% 0.203 258.1), rgb(39, 129, 253).
Aa
Black text reads best on this color (5.64:1).
About this color
#2781FD is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.203 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.018 away. Black text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.203) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.64:1 |
| White text | 3.72:1 |
Values
| HEX | #2781FD |
| RGB | rgb(39, 129, 253) |
| HSL | hsl(215, 98%, 57%) |
| OKLCH | oklch(62.1% 0.203 258.1) |
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 #2781FD | 3.72:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #2781FD | 5.64:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #2781FD text on white | 3.72:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #2781FD text on black | 5.64:1 | AA | Lc -37.5 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFE
oklch(88.5% 0.055 257.7)
-
Step 300
300
#9AC3FF
oklch(81% 0.096 257.8)
-
Step 400
400
#60A0FF
oklch(70.6% 0.155 258.1)
-
Step 500
500 (this color)
#2781FD
oklch(62.1% 0.203 258.1)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900
#073E86
oklch(37.8% 0.132 258.1)
-
Step 950
950
#08254E
oklch(27% 0.083 258)
#2781FD 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) | #338EFF | 0.035 |
| Deuteranopia (no green cones) | #007CFB | 0.019 |
| Tritanopia (no blue cones) | #009FB3 | 0.154 |
| Achromatopsia (no color) | #848484 | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2781FD
#2781FD
oklch(62.1% 0.203 258.1)
- #B07B00
#B07B00
oklch(62.1% 0.129 78.4)
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 #2781FD, closest first.
No curated palette has a color within ΔE 0.04 of #2781FD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.018
- Dodger Blue #1E90FF ΔE 0.038
- Cerulean Blue #056EEE ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.059
- Cornflower #6A79F7 ΔE 0.059
- Soft Blue #6488EA ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.066
- Royal Blue #4169E1 ΔE 0.069
Use #2781FD 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.