#199DE1
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.3% 0.144 239.2), rgb(25, 157, 225).
Aa
Black text reads best on this color (6.95:1).
About this color
#199DE1 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.144 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.040 away. Black text reads best on it, at 6.95:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.95:1 |
| White text | 3.02:1 |
Values
| HEX | #199DE1 |
| RGB | rgb(25, 157, 225) |
| HSL | hsl(200, 80%, 49%) |
| OKLCH | oklch(66.3% 0.144 239.2) |
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 #199DE1 | 3.02:1 | AA large text | Lc -61.7 | Content text, not long reading |
| Black text on #199DE1 | 6.95:1 | AA | Lc 47.7 | Large or bold text, headings |
| #199DE1 text on white | 3.02:1 | AA large text | Lc 56.4 | Large or bold text, headings |
| #199DE1 text on black | 6.95:1 | AA | Lc -45.4 | Large or bold text, headings |
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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DDF1
oklch(88.4% 0.04 240)
-
Step 300
300
#97C8EA
oklch(81% 0.07 239)
-
Step 400
400
#56AADF
oklch(70.7% 0.113 238.8)
-
Step 500
500 (this color)
#199DE1
oklch(66.3% 0.144 239.2)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00476A
oklch(37.9% 0.085 239)
-
Step 950
950
#012A40
oklch(27.1% 0.059 238.3)
#199DE1 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) | #7C9EE4 | 0.075 |
| Deuteranopia (no green cones) | #628DE0 | 0.059 |
| Tritanopia (no blue cones) | #00AEB5 | 0.093 |
| Achromatopsia (no color) | #949494 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #199DE1
#199DE1
oklch(66.3% 0.144 239.2)
- #D27A23
#D27A23
oklch(66.3% 0.144 59.3)
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 #199DE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.056
- Dodger Blue #1E90FF ΔE 0.062
- Water Blue #0E87CC ΔE 0.065
- Soft Blue #6488EA ΔE 0.073
- Faded Blue #658CBB ΔE 0.074
- Turquoise Blue #06B1C4 ΔE 0.081
Use #199DE1 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.