#2193DC
Closest named color: Dark Sky Blue (#448EE4). oklch(63.8% 0.145 243.5), rgb(33, 147, 220).
Aa
Black text reads best on this color (6.27:1).
About this color
#2193DC is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.145 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.027 away. Black text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.27:1 |
| White text | 3.34:1 |
Values
| HEX | #2193DC |
| RGB | rgb(33, 147, 220) |
| HSL | hsl(203, 74%, 50%) |
| OKLCH | oklch(63.8% 0.145 243.5) |
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 #2193DC | 3.34:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #2193DC | 6.27:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #2193DC text on white | 3.34:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #2193DC text on black | 6.27:1 | AA | Lc -41.3 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
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
#99C7EB
oklch(81% 0.07 242.3)
-
Step 400
400
#5DA8E2
oklch(70.7% 0.114 243.7)
-
Step 500
500 (this color)
#2193DC
oklch(63.8% 0.145 243.5)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#00456E
oklch(37.6% 0.092 243.7)
-
Step 950
950
#052941
oklch(27% 0.06 243.1)
#2193DC 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) | #7095DF | 0.064 |
| Deuteranopia (no green cones) | #5685DB | 0.047 |
| Tritanopia (no blue cones) | #00A5AD | 0.100 |
| Achromatopsia (no color) | #8C8C8C | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2193DC
#2193DC
oklch(63.8% 0.145 243.5)
- #C77500
#C77500
oklch(63.8% 0.145 63.8)
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 #2193DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.039
- Water Blue #0E87CC ΔE 0.040
- Dodger Blue #1E90FF ΔE 0.055
- Cornflower Blue #6495ED ΔE 0.058
- Cool Blue #4984B8 ΔE 0.061
- Soft Blue #6488EA ΔE 0.061
- Faded Blue #658CBB ΔE 0.065
Use #2193DC 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.