#5D99FE
Closest named color: Cornflower Blue (#6495ED). oklch(68.9% 0.162 260.2), rgb(93, 153, 254).
Aa
Black text reads best on this color (7.45:1).
About this color
#5D99FE is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.162 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.025 away. Black text reads best on it, at 7.45:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.45:1 |
| White text | 2.81:1 |
Values
| HEX | #5D99FE |
| RGB | rgb(93, 153, 254) |
| HSL | hsl(218, 99%, 68%) |
| OKLCH | oklch(68.9% 0.162 260.2) |
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 #5D99FE | 2.81:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #5D99FE | 7.45:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #5D99FE text on white | 2.81:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #5D99FE text on black | 7.45:1 | AAA | Lc -48.0 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400 (this color)
#5D99FE
oklch(68.9% 0.162 260.2)
-
Step 500
500
#3983FF
oklch(63.1% 0.199 260.2)
-
Step 600
600
#0767F3
oklch(55.6% 0.224 260.2)
-
Step 700
700
#0055D0
oklch(49% 0.203 260.3)
-
Step 800
800
#0346AB
oklch(42.7% 0.173 260.2)
-
Step 900
900
#0F3C87
oklch(37.6% 0.135 260.4)
-
Step 950
950
#0A244F
oklch(26.9% 0.085 260)
#5D99FE 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) | #6CA2FF | 0.030 |
| Deuteranopia (no green cones) | #5493FC | 0.019 |
| Tritanopia (no blue cones) | #00B0BF | 0.134 |
| Achromatopsia (no color) | #9A9A9A | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D99FE
#5D99FE
oklch(68.9% 0.162 260.2)
- #C98F00
#C98F00
oklch(68.9% 0.143 79.7)
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 #5D99FE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.032
- Soft Blue #6488EA ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.053
- Periwinkle Blue #8F99FB ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.063
- Perrywinkle #8F8CE7 ΔE 0.067
Use #5D99FE 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.