#0197E2
Closest named color: Dark Sky Blue (#448EE4). oklch(64.8% 0.153 241.7), rgb(1, 151, 226).
Aa
Black text reads best on this color (6.52:1).
About this color
#0197E2 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.153 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.033 away. Black text reads best on it, at 6.52:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.52:1 |
| White text | 3.21:1 |
Values
| HEX | #0197E2 |
| RGB | rgb(1, 151, 226) |
| HSL | hsl(200, 99%, 45%) |
| OKLCH | oklch(64.8% 0.153 241.7) |
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 #0197E2 | 3.21:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #0197E2 | 6.52:1 | AA | Lc 45.4 | Large or bold text, headings |
| #0197E2 text on white | 3.21:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #0197E2 text on black | 6.52:1 | AA | Lc -43.0 | 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 500.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C2DDF3
oklch(88.5% 0.042 242.7)
-
Step 300
300
#96C7ED
oklch(80.9% 0.075 242.1)
-
Step 400
400
#55A9E4
oklch(70.7% 0.119 241.8)
-
Step 500
500 (this color)
#0197E2
oklch(64.8% 0.153 241.7)
-
Step 600
600
#007AB8
oklch(55.5% 0.131 241.7)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#012942
oklch(26.9% 0.063 242.1)
#0197E2 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) | #7399E5 | 0.072 |
| Deuteranopia (no green cones) | #5688E1 | 0.053 |
| Tritanopia (no blue cones) | #00AAB2 | 0.103 |
| Achromatopsia (no color) | #8F8F8F | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0197E2
#0197E2
oklch(64.8% 0.153 241.7)
- #CD7500
#CD7500
oklch(64.6% 0.149 61.6)
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 #0197E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.037
- Water Blue #0E87CC ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.058
- Soft Blue #6488EA ΔE 0.067
- Cool Blue #4984B8 ΔE 0.074
- Faded Blue #658CBB ΔE 0.075
Use #0197E2 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.