#2584ED
Closest named color: Clear Blue (#247AFD). oklch(61.6% 0.18 254.7), rgb(37, 132, 237).
Aa
Black text reads best on this color (5.60:1).
About this color
#2584ED is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.180 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.037 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #2584ED |
| RGB | rgb(37, 132, 237) |
| HSL | hsl(212, 85%, 54%) |
| OKLCH | oklch(61.6% 0.18 254.7) |
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 #2584ED | 3.74:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #2584ED | 5.60:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #2584ED text on white | 3.74:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #2584ED text on black | 5.60:1 | AA | Lc -37.2 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9AC4F9
oklch(80.9% 0.088 254.5)
-
Step 400
400
#60A3F6
oklch(70.7% 0.14 254.7)
-
Step 500
500 (this color)
#2584ED
oklch(61.6% 0.18 254.7)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#06417E
oklch(37.8% 0.117 254.6)
-
Step 950
950
#082649
oklch(26.9% 0.074 254.8)
#2584ED 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) | #4C8DF1 | 0.039 |
| Deuteranopia (no green cones) | #1D7CEB | 0.022 |
| Tritanopia (no blue cones) | #009DAD | 0.134 |
| Achromatopsia (no color) | #848484 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2584ED
#2584ED
oklch(61.6% 0.18 254.7)
- #B27700
#B27700
oklch(61.5% 0.13 74.5)
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 #2584ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.037
- Dodger Blue #1E90FF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.040
- Water Blue #0E87CC ΔE 0.054
- Soft Blue #6488EA ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.060
- Cornflower #6A79F7 ΔE 0.065
Use #2584ED 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.