#1782DB
Closest named color: Water Blue (#0E87CC). oklch(59.7% 0.162 250.3), rgb(23, 130, 219).
Aa
Black text reads best on this color (5.25:1).
About this color
#1782DB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.162 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.029 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #1782DB |
| RGB | rgb(23, 130, 219) |
| HSL | hsl(207, 81%, 47%) |
| OKLCH | oklch(59.7% 0.162 250.3) |
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 #1782DB | 3.99:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #1782DB | 5.25:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #1782DB text on white | 3.99:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #1782DB text on black | 5.25:1 | AA | Lc -35.0 | 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
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9AC5F3
oklch(80.9% 0.08 250.5)
-
Step 400
400
#5FA5EC
oklch(70.6% 0.127 250.4)
-
Step 500
500 (this color)
#1782DB
oklch(59.7% 0.162 250.3)
-
Step 600
600
#0075CB
oklch(55.5% 0.159 250.4)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800
#00508E
oklch(42.6% 0.122 250.5)
-
Step 900
900
#034377
oklch(37.7% 0.106 250.4)
-
Step 950
950
#072846
oklch(27.2% 0.067 250.1)
#1782DB 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) | #5588DF | 0.048 |
| Deuteranopia (no green cones) | #3477D9 | 0.030 |
| Tritanopia (no blue cones) | #0097A4 | 0.116 |
| Achromatopsia (no color) | #7F7F7F | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1782DB
#1782DB
oklch(59.7% 0.162 250.3)
- #AF6F00
#AF6F00
oklch(59.6% 0.129 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 #1782DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.046
- Windows Blue #3778BF ΔE 0.047
- Clear Blue #247AFD ΔE 0.058
- Cool Blue #4984B8 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.062
- Cerulean Blue #056EEE ΔE 0.063
- Steel Blue #4682B4 ΔE 0.064
Use #1782DB 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.