#2593DD
Closest named color: Dark Sky Blue (#448EE4). oklch(63.9% 0.145 244.3), rgb(37, 147, 221).
Aa
Black text reads best on this color (6.29:1).
About this color
#2593DD is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.145 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.025 away. Black text reads best on it, at 6.29:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.29:1 |
| White text | 3.33:1 |
Values
| HEX | #2593DD |
| RGB | rgb(37, 147, 221) |
| HSL | hsl(204, 73%, 51%) |
| OKLCH | oklch(63.9% 0.145 244.3) |
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 #2593DD | 3.33:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #2593DD | 6.29:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #2593DD text on white | 3.33:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #2593DD text on black | 6.29:1 | AA | Lc -41.4 | 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
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF2
oklch(88.6% 0.039 243.5)
-
Step 300
300
#9AC6EC
oklch(80.8% 0.071 244.9)
-
Step 400
400
#5EA8E2
oklch(70.7% 0.113 244)
-
Step 500
500 (this color)
#2593DD
oklch(63.9% 0.145 244.3)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#062941
oklch(27% 0.059 243.6)
#2593DD 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) | #7096E0 | 0.063 |
| Deuteranopia (no green cones) | #5685DC | 0.046 |
| Tritanopia (no blue cones) | #00A5AE | 0.100 |
| Achromatopsia (no color) | #8D8D8D | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2593DD
#2593DD
oklch(63.9% 0.145 244.3)
- #C77600
#C77600
oklch(64% 0.144 64.4)
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 #2593DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.036
- Water Blue #0E87CC ΔE 0.041
- Dodger Blue #1E90FF ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.055
- Soft Blue #6488EA ΔE 0.059
- Cool Blue #4984B8 ΔE 0.062
- Faded Blue #658CBB ΔE 0.065
Use #2593DD 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.