#2580ED
Closest named color: Clear Blue (#247AFD). oklch(60.7% 0.184 256), rgb(37, 128, 237).
Aa
Black text reads best on this color (5.38:1).
About this color
#2580ED is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.184 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.030 away. Black text reads best on it, at 5.38:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.38:1 |
| White text | 3.89:1 |
Values
| HEX | #2580ED |
| RGB | rgb(37, 128, 237) |
| HSL | hsl(213, 85%, 54%) |
| OKLCH | oklch(60.7% 0.184 256) |
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 #2580ED | 3.89:1 | AA large text | Lc -71.3 | Content text, not long reading |
| Black text on #2580ED | 5.38:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #2580ED text on white | 3.89:1 | AA large text | Lc 65.8 | Content text, not long reading |
| #2580ED text on black | 5.38:1 | AA | Lc -35.8 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFB
oklch(88.5% 0.051 256.7)
-
Step 300
300
#9AC3FB
oklch(80.8% 0.091 256.3)
-
Step 400
400
#61A2F9
oklch(70.7% 0.145 256.2)
-
Step 500
500 (this color)
#2580ED
oklch(60.7% 0.184 256)
-
Step 600
600
#006FDE
oklch(55.5% 0.189 256)
-
Step 700
700
#005DBC
oklch(49% 0.167 256)
-
Step 800
800
#004C9C
oklch(42.7% 0.146 256)
-
Step 900
900
#09407F
oklch(37.7% 0.119 255.9)
-
Step 950
950
#09264A
oklch(27% 0.075 255.8)
#2580ED 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) | #438AF1 | 0.036 |
| Deuteranopia (no green cones) | #0079EB | 0.023 |
| Tritanopia (no blue cones) | #009AAB | 0.138 |
| Achromatopsia (no color) | #818181 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2580ED
#2580ED
oklch(60.7% 0.184 256)
- #AD7600
#AD7600
oklch(60.7% 0.127 76.3)
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 #2580ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.030
- Dodger Blue #1E90FF ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.049
- Cerulean Blue #056EEE ΔE 0.050
- Water Blue #0E87CC ΔE 0.058
- Royal Blue #4169E1 ΔE 0.058
- Soft Blue #6488EA ΔE 0.060
- Cornflower #6A79F7 ΔE 0.064
Use #2580ED 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.