#197ED7
Closest named color: Water Blue (#0E87CC). oklch(58.6% 0.161 251.2), rgb(25, 126, 215).
Aa
Black text reads best on this color (5.00:1).
About this color
#197ED7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.161 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.033 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #197ED7 |
| RGB | rgb(25, 126, 215) |
| HSL | hsl(208, 79%, 47%) |
| OKLCH | oklch(58.6% 0.161 251.2) |
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 #197ED7 | 4.19:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #197ED7 | 5.00:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #197ED7 text on white | 4.19:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #197ED7 text on black | 5.00:1 | AA | Lc -33.3 | 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 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
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9EC4EF
oklch(80.8% 0.074 251.8)
-
Step 400
400
#67A5E6
oklch(70.7% 0.115 250.8)
-
Step 500
500
#398DDF
oklch(63.2% 0.148 250.9)
-
Step 600
600 (this color)
#197ED7
oklch(58.6% 0.161 251.2)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#025090
oklch(42.7% 0.124 251.4)
-
Step 900
900
#114373
oklch(37.8% 0.097 251.5)
-
Step 950
950
#0C2843
oklch(27.1% 0.061 250.4)
#197ED7 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) | #5184DB | 0.045 |
| Deuteranopia (no green cones) | #2F74D5 | 0.026 |
| Tritanopia (no blue cones) | #0093A0 | 0.117 |
| Achromatopsia (no color) | #7C7C7C | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197ED7
#197ED7
oklch(58.6% 0.161 251.2)
- #AA6D00
#AA6D00
oklch(58.6% 0.126 71.1)
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 #197ED7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.033
- Windows Blue #3778BF ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.058
- Royal Blue #4169E1 ΔE 0.059
- Clear Blue #247AFD ΔE 0.060
- Nice Blue #107AB0 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
Use #197ED7 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.