#197FCE
Closest named color: Water Blue (#0E87CC). oklch(58.2% 0.149 248.4), rgb(25, 127, 206).
Aa
Black text reads best on this color (4.96:1).
About this color
#197FCE is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.149 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.023 away. Black text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 4.96:1 |
| White text | 4.22:1 |
Values
| HEX | #197FCE |
| RGB | rgb(25, 127, 206) |
| HSL | hsl(206, 78%, 45%) |
| OKLCH | oklch(58.2% 0.149 248.4) |
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 #197FCE | 4.22:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #197FCE | 4.96:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #197FCE text on white | 4.22:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #197FCE text on black | 4.96:1 | AA | Lc -33.0 | 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 600.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#9FC5EA
oklch(80.9% 0.066 248)
-
Step 400
400
#69A6E0
oklch(70.7% 0.106 248.4)
-
Step 500
500
#3B8ED8
oklch(63.1% 0.137 248.7)
-
Step 600
600 (this color)
#197FCE
oklch(58.2% 0.149 248.4)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#03518A
oklch(42.6% 0.115 248.8)
-
Step 900
900
#11446E
oklch(37.7% 0.089 248.1)
-
Step 950
950
#0D2841
oklch(27% 0.057 249.3)
#197FCE 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) | #5884D1 | 0.050 |
| Deuteranopia (no green cones) | #3C74CC | 0.032 |
| Tritanopia (no blue cones) | #00929C | 0.107 |
| Achromatopsia (no color) | #7B7B7B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197FCE
#197FCE
oklch(58.2% 0.149 248.4)
- #AB6A00
#AB6A00
oklch(58.2% 0.127 68.3)
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 #197FCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.023
- Windows Blue #3778BF ΔE 0.029
- Nice Blue #107AB0 ΔE 0.047
- Cool Blue #4984B8 ΔE 0.050
- Steel Blue #4682B4 ΔE 0.050
- Blue NCS #118AB2 ΔE 0.060
- Dark Sky Blue #448EE4 ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.062
Use #197FCE 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.