#5199DF
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.7% 0.127 249.7), rgb(81, 153, 223).
Aa
Black text reads best on this color (6.97:1).
About this color
#5199DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.127 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.029 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.97:1 |
| White text | 3.01:1 |
Values
| HEX | #5199DF |
| RGB | rgb(81, 153, 223) |
| HSL | hsl(210, 69%, 60%) |
| OKLCH | oklch(66.7% 0.127 249.7) |
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 #5199DF | 3.01:1 | AA large text | Lc -62.0 | Content text, not long reading |
| Black text on #5199DF | 6.97:1 | AA | Lc 47.5 | Large or bold text, headings |
| #5199DF text on white | 3.01:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #5199DF text on black | 6.97:1 | AA | Lc -45.2 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C4E8
oklch(80.8% 0.063 250.1)
-
Step 400
400
#6FA5DC
oklch(70.6% 0.099 249.8)
-
Step 500
500 (this color)
#5199DF
oklch(66.7% 0.127 249.7)
-
Step 600
600
#2276C0
oklch(55.5% 0.139 249.9)
-
Step 700
700
#1363A6
oklch(49.1% 0.129 249.9)
-
Step 800
800
#145186
oklch(42.6% 0.106 249.7)
-
Step 900
900
#19446C
oklch(37.8% 0.083 249.6)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#5199DF 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) | #7B9CE2 | 0.046 |
| Deuteranopia (no green cones) | #678EDE | 0.034 |
| Tritanopia (no blue cones) | #00A9B2 | 0.099 |
| Achromatopsia (no color) | #959595 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5199DF
#5199DF
oklch(66.7% 0.127 249.7)
- #C6852D
#C6852D
oklch(66.8% 0.127 69.9)
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 #5199DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.029
- Cornflower Blue #6495ED ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.036
- Soft Blue #6488EA ΔE 0.053
- Faded Blue #658CBB ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.065
- Water Blue #0E87CC ΔE 0.072
- Cool Blue #4984B8 ΔE 0.076
Use #5199DF 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.