#5198DF
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.5% 0.128 250.3), rgb(81, 152, 223).
Aa
Black text reads best on this color (6.90:1).
About this color
#5198DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.128 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.028 away. Black text reads best on it, at 6.90:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.90:1 |
| White text | 3.04:1 |
Values
| HEX | #5198DF |
| RGB | rgb(81, 152, 223) |
| HSL | hsl(210, 69%, 60%) |
| OKLCH | oklch(66.5% 0.128 250.3) |
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 #5198DF | 3.04:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #5198DF | 6.90:1 | AA | Lc 47.1 | Large or bold text, headings |
| #5198DF text on white | 3.04:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #5198DF text on black | 6.90:1 | AA | Lc -44.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#6FA5DD
oklch(70.7% 0.1 250.3)
-
Step 500
500 (this color)
#5198DF
oklch(66.5% 0.128 250.3)
-
Step 600
600
#2476C1
oklch(55.6% 0.139 250.5)
-
Step 700
700
#1563A7
oklch(49.2% 0.13 250.5)
-
Step 800
800
#155187
oklch(42.7% 0.107 250.3)
-
Step 900
900
#1A446C
oklch(37.8% 0.083 250)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#5198DF 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) | #799BE2 | 0.044 |
| Deuteranopia (no green cones) | #668EDE | 0.031 |
| Tritanopia (no blue cones) | #00A9B1 | 0.102 |
| Achromatopsia (no color) | #949494 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5198DF
#5198DF
oklch(66.5% 0.128 250.3)
- #C5842A
#C5842A
oklch(66.5% 0.128 70.2)
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 #5198DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.028
- Cornflower Blue #6495ED ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.033
- Soft Blue #6488EA ΔE 0.051
- Faded Blue #658CBB ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.064
- Water Blue #0E87CC ΔE 0.070
- Cool Blue #4984B8 ΔE 0.074
Use #5198DF 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.