#2489E2
Closest named color: Dark Sky Blue (#448EE4). oklch(61.9% 0.161 250.4), rgb(36, 137, 226).
Aa
Black text reads best on this color (5.75:1).
About this color
#2489E2 is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.161 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.026 away. Black text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.75:1 |
| White text | 3.65:1 |
Values
| HEX | #2489E2 |
| RGB | rgb(36, 137, 226) |
| HSL | hsl(208, 77%, 51%) |
| OKLCH | oklch(61.9% 0.161 250.4) |
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 #2489E2 | 3.65:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #2489E2 | 5.75:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #2489E2 text on white | 3.65:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #2489E2 text on black | 5.75:1 | AA | Lc -38.1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9AC5F2
oklch(80.9% 0.079 250)
-
Step 400
400
#60A5EC
oklch(70.7% 0.126 250.6)
-
Step 500
500 (this color)
#2489E2
oklch(61.9% 0.161 250.4)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800
#00508E
oklch(42.6% 0.122 250.5)
-
Step 900
900
#044376
oklch(37.7% 0.104 250.2)
-
Step 950
950
#072845
oklch(27.1% 0.066 249.3)
#2489E2 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) | #5D8FE6 | 0.049 |
| Deuteranopia (no green cones) | #3E7EE0 | 0.030 |
| Tritanopia (no blue cones) | #009EAA | 0.117 |
| Achromatopsia (no color) | #868686 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2489E2
#2489E2
oklch(61.9% 0.161 250.4)
- #B87500
#B87500
oklch(61.9% 0.134 70.1)
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 #2489E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.026
- Water Blue #0E87CC ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.046
- Soft Blue #6488EA ΔE 0.053
- Clear Blue #247AFD ΔE 0.060
- Windows Blue #3778BF ΔE 0.063
- Cool Blue #4984B8 ΔE 0.065
Use #2489E2 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.