#1785BF
Closest named color: Water Blue (#0E87CC). oklch(58.8% 0.126 239.3), rgb(23, 133, 191).
Aa
Black text reads best on this color (5.14:1).
About this color
#1785BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.126 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.020 away. Black text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.14:1 |
| White text | 4.08:1 |
Values
| HEX | #1785BF |
| RGB | rgb(23, 133, 191) |
| HSL | hsl(201, 79%, 42%) |
| OKLCH | oklch(58.8% 0.126 239.3) |
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 #1785BF | 4.08:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #1785BF | 5.14:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #1785BF text on white | 4.08:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #1785BF text on black | 5.14:1 | AA | Lc -34.2 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400
#69A9D3
oklch(70.8% 0.09 238.6)
-
Step 500
500
#3992C8
oklch(63.1% 0.117 239.3)
-
Step 600
600 (this color)
#1785BF
oklch(58.8% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#104665
oklch(37.6% 0.076 239.3)
-
Step 950
950
#0C293B
oklch(26.9% 0.048 239.4)
#1785BF 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) | #6986C2 | 0.066 |
| Deuteranopia (no green cones) | #5377BE | 0.052 |
| Tritanopia (no blue cones) | #009499 | 0.084 |
| Achromatopsia (no color) | #7E7E7E | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1785BF
#1785BF
oklch(58.8% 0.126 239.3)
- #B2671E
#B2671E
oklch(58.7% 0.126 59.2)
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 #1785BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.020
- Blue NCS #118AB2 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.031
- Nice Blue #107AB0 ΔE 0.036
- Windows Blue #3778BF ΔE 0.038
- Off Blue #5684AE ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.054
Use #1785BF 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.