#0191DA
Closest named color: Water Blue (#0E87CC). oklch(62.9% 0.149 241.9), rgb(1, 145, 218).
Aa
Black text reads best on this color (6.06:1).
About this color
#0191DA is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.149 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.032 away. Black text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 6.06:1 |
| White text | 3.46:1 |
Values
| HEX | #0191DA |
| RGB | rgb(1, 145, 218) |
| HSL | hsl(200, 99%, 43%) |
| OKLCH | oklch(62.9% 0.149 241.9) |
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 #0191DA | 3.46:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #0191DA | 6.06:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #0191DA text on white | 3.46:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #0191DA text on black | 6.06:1 | AA | Lc -40.2 | 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
#C3DDF2
oklch(88.5% 0.04 242.4)
-
Step 300
300
#97C7EC
oklch(80.9% 0.073 241.9)
-
Step 400
400
#58A9E3
oklch(70.8% 0.116 242.1)
-
Step 500
500 (this color)
#0191DA
oklch(62.9% 0.149 241.9)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
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
#022942
oklch(27% 0.062 242.6)
#0191DA 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) | #6E93DD | 0.070 |
| Deuteranopia (no green cones) | #5282D9 | 0.052 |
| Tritanopia (no blue cones) | #00A3AB | 0.100 |
| Achromatopsia (no color) | #8A8A8A | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0191DA
#0191DA
oklch(62.9% 0.149 241.9)
- #C57100
#C57100
oklch(62.9% 0.145 62)
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 #0191DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.058
- Cool Blue #4984B8 ΔE 0.059
- Blue NCS #118AB2 ΔE 0.061
- Steel Blue #4682B4 ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.067
Use #0191DA 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.