#5C99E5
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.13 254.8), rgb(92, 153, 229).
Aa
Black text reads best on this color (7.14:1).
About this color
#5C99E5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.130 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.019 away. Black text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.14:1 |
| White text | 2.93:1 |
Values
| HEX | #5C99E5 |
| RGB | rgb(92, 153, 229) |
| HSL | hsl(213, 72%, 63%) |
| OKLCH | oklch(67.5% 0.13 254.8) |
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 #5C99E5 | 2.93:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #5C99E5 | 7.14:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #5C99E5 text on white | 2.93:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #5C99E5 text on black | 7.14:1 | AAA | Lc -46.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400 (this color)
#5C99E5
oklch(67.5% 0.13 254.8)
-
Step 500
500
#378AEB
oklch(63.2% 0.166 254.7)
-
Step 600
600
#0271D9
oklch(55.6% 0.181 254.7)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#014D98
oklch(42.6% 0.139 254.9)
-
Step 900
900
#0F4179
oklch(37.6% 0.108 254.7)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#5C99E5 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) | #799EE8 | 0.036 |
| Deuteranopia (no green cones) | #6791E3 | 0.022 |
| Tritanopia (no blue cones) | #00AAB4 | 0.109 |
| Achromatopsia (no color) | #969696 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C99E5
#5C99E5
oklch(67.5% 0.13 254.8)
- #C58926
#C58926
oklch(67.4% 0.13 74.5)
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 #5C99E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.019
- Chefchaouen Blue #4895EF ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.039
- Soft Blue #6488EA ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.064
- Faded Blue #658CBB ΔE 0.065
- Perrywinkle #8F8CE7 ΔE 0.066
- Periwinkle Blue #8F99FB ΔE 0.069
Use #5C99E5 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.