#5199F3
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.8% 0.152 255.2), rgb(81, 153, 243).
Aa
Black text reads best on this color (7.20:1).
About this color
#5199F3 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.152 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.015 away. Black text reads best on it, at 7.20:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #5199F3 |
| RGB | rgb(81, 153, 243) |
| HSL | hsl(213, 87%, 64%) |
| OKLCH | oklch(67.8% 0.152 255.2) |
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 #5199F3 | 2.91:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #5199F3 | 7.20:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #5199F3 text on white | 2.91:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #5199F3 text on black | 7.20:1 | AAA | Lc -46.5 | 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 400.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C2DBFC
oklch(88.4% 0.053 255.4)
-
Step 300
300
#97C4FE
oklch(81% 0.096 255)
-
Step 400
400 (this color)
#5199F3
oklch(67.8% 0.152 255.2)
-
Step 500
500
#1E87FB
oklch(63% 0.195 255.3)
-
Step 600
600
#0070DB
oklch(55.5% 0.184 255.3)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#004081
oklch(37.7% 0.124 254.9)
-
Step 950
950
#05264C
oklch(27% 0.08 254.9)
#5199F3 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) | #719FF7 | 0.038 |
| Deuteranopia (no green cones) | #5990F1 | 0.023 |
| Tritanopia (no blue cones) | #00AEBA | 0.122 |
| Achromatopsia (no color) | #979797 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5199F3
#5199F3
oklch(67.8% 0.152 255.2)
- #CA8900
#CA8900
oklch(67.9% 0.143 75.4)
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 #5199F3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.015
- Cornflower Blue #6495ED ΔE 0.019
- Dark Sky Blue #448EE4 ΔE 0.038
- Soft Blue #6488EA ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.046
- Periwinkle Blue #8F99FB ΔE 0.070
- Perrywinkle #8F8CE7 ΔE 0.073
- Lavender Blue #8B88F8 ΔE 0.075
Use #5199F3 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.