#1999FA
Closest named color: Dodger Blue (#1E90FF). oklch(66.8% 0.176 248.7), rgb(25, 153, 250).
Aa
Black text reads best on this color (6.97:1).
About this color
#1999FA is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.176 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.026 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.97:1 |
| White text | 3.00:1 |
Values
| HEX | #1999FA |
| RGB | rgb(25, 153, 250) |
| HSL | hsl(206, 96%, 54%) |
| OKLCH | oklch(66.8% 0.176 248.7) |
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 #1999FA | 3.00:1 | AA large text | Lc -61.5 | Content text, not long reading |
| Black text on #1999FA | 6.97:1 | AA | Lc 47.9 | Large or bold text, headings |
| #1999FA text on white | 3.00:1 | AA large text | Lc 56.2 | Large or bold text, headings |
| #1999FA text on black | 6.97:1 | AA | Lc -45.6 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C1DDF8
oklch(88.6% 0.048 247.4)
-
Step 300
300
#95C6F6
oklch(80.9% 0.086 248.4)
-
Step 400
400
#54A6F2
oklch(70.7% 0.138 248.8)
-
Step 500
500 (this color)
#1999FA
oklch(66.8% 0.176 248.7)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A8
oklch(49% 0.134 248.8)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#012848
oklch(27.1% 0.073 248.6)
#1999FA 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) | #699FFE | 0.058 |
| Deuteranopia (no green cones) | #458CF8 | 0.036 |
| Tritanopia (no blue cones) | #00B0BD | 0.125 |
| Achromatopsia (no color) | #959595 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1999FA
#1999FA
oklch(66.8% 0.176 248.7)
- #CD8100
#CD8100
oklch(66.7% 0.146 68.9)
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 #1999FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.049
- Soft Blue #6488EA ΔE 0.061
- Water Blue #0E87CC ΔE 0.079
- Clear Blue #247AFD ΔE 0.080
- Cornflower #6A79F7 ΔE 0.091
Use #1999FA 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.