#197FD7
Closest named color: Water Blue (#0E87CC). oklch(58.8% 0.16 250.8), rgb(25, 127, 215).
Aa
Black text reads best on this color (5.05:1).
About this color
#197FD7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.160 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #197FD7 |
| RGB | rgb(25, 127, 215) |
| HSL | hsl(208, 79%, 47%) |
| OKLCH | oklch(58.8% 0.16 250.8) |
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 #197FD7 | 4.15:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #197FD7 | 5.05:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #197FD7 text on white | 4.15:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #197FD7 text on black | 5.05:1 | AA | Lc -33.7 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9EC5EE
oklch(81% 0.072 250)
-
Step 400
400
#67A5E6
oklch(70.7% 0.115 250.8)
-
Step 500
500
#398DDE
oklch(63.1% 0.146 250.7)
-
Step 600
600 (this color)
#197FD7
oklch(58.8% 0.16 250.8)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#01508F
oklch(42.7% 0.123 250.9)
-
Step 900
900
#104372
oklch(37.7% 0.096 250.8)
-
Step 950
950
#0C2843
oklch(27.1% 0.061 250.4)
#197FD7 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) | #5385DA | 0.046 |
| Deuteranopia (no green cones) | #3275D5 | 0.027 |
| Tritanopia (no blue cones) | #0094A0 | 0.117 |
| Achromatopsia (no color) | #7C7C7C | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197FD7
#197FD7
oklch(58.8% 0.16 250.8)
- #AB6D00
#AB6D00
oklch(58.7% 0.127 70.6)
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 #197FD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Windows Blue #3778BF ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.054
- Cool Blue #4984B8 ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Nice Blue #107AB0 ΔE 0.061
- Clear Blue #247AFD ΔE 0.061
- Steel Blue #4682B4 ΔE 0.062
Use #197FD7 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.