#0197EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.5% 0.167 245.7), rgb(1, 151, 239).
Aa
Black text reads best on this color (6.67:1).
About this color
#0197EF is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.167 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.028 away. Black text reads best on it, at 6.67:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.67:1 |
| White text | 3.14:1 |
Values
| HEX | #0197EF |
| RGB | rgb(1, 151, 239) |
| HSL | hsl(202, 99%, 47%) |
| OKLCH | oklch(65.5% 0.167 245.7) |
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 #0197EF | 3.14:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #0197EF | 6.67:1 | AA | Lc 46.2 | Large or bold text, headings |
| #0197EF text on white | 3.14:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #0197EF text on black | 6.67:1 | AA | Lc -43.9 | 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
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C1DDF6
oklch(88.5% 0.046 245.3)
-
Step 300
300
#95C7F3
oklch(81% 0.082 245.6)
-
Step 400
400
#53A8ED
oklch(70.8% 0.131 245.6)
-
Step 500
500 (this color)
#0197EF
oklch(65.5% 0.167 245.7)
-
Step 600
600
#0078C0
oklch(55.5% 0.142 245.8)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004571
oklch(37.8% 0.096 245.5)
-
Step 950
950
#002846
oklch(26.9% 0.07 246.6)
#0197EF 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) | #6C9BF3 | 0.065 |
| Deuteranopia (no green cones) | #4B89ED | 0.044 |
| Tritanopia (no blue cones) | #00ADB7 | 0.118 |
| Achromatopsia (no color) | #919191 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0197EF
#0197EF
oklch(65.5% 0.167 245.7)
- #CC7B00
#CC7B00
oklch(65.5% 0.146 65.6)
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 #0197EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.053
- Soft Blue #6488EA ΔE 0.061
- Water Blue #0E87CC ΔE 0.063
- Clear Blue #247AFD ΔE 0.080
- Cool Blue #4984B8 ΔE 0.089
Use #0197EF 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.