#5D99EB
Closest named color: Cornflower Blue (#6495ED). oklch(67.9% 0.137 256.6), rgb(93, 153, 235).
Aa
Black text reads best on this color (7.22:1).
About this color
#5D99EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.137 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.013 away. Black text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.22:1 |
| White text | 2.90:1 |
Values
| HEX | #5D99EB |
| RGB | rgb(93, 153, 235) |
| HSL | hsl(215, 78%, 64%) |
| OKLCH | oklch(67.9% 0.137 256.6) |
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 #5D99EB | 2.90:1 | Fails | Lc -60.5 | Content text, not long reading |
| Black text on #5D99EB | 7.22:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #5D99EB text on white | 2.90:1 | Fails | Lc 55.2 | Large or bold text, headings |
| #5D99EB text on black | 7.22:1 | AAA | Lc -46.6 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9DC3F8
oklch(80.9% 0.086 256.8)
-
Step 400
400 (this color)
#5D99EB
oklch(67.9% 0.137 256.6)
-
Step 500
500
#3888F1
oklch(63.1% 0.176 256.6)
-
Step 600
600
#076FDF
oklch(55.6% 0.19 256.5)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#034C9D
oklch(42.8% 0.147 256.5)
-
Step 900
900
#10407D
oklch(37.7% 0.115 256.7)
-
Step 950
950
#0C2649
oklch(27% 0.072 256.9)
#5D99EB 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) | #769FEE | 0.033 |
| Deuteranopia (no green cones) | #6391E9 | 0.021 |
| Tritanopia (no blue cones) | #00ACB7 | 0.116 |
| Achromatopsia (no color) | #979797 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D99EB
#5D99EB
oklch(67.9% 0.137 256.6)
- #C78B15
#C78B15
oklch(67.9% 0.137 76.9)
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 #5D99EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.013
- Chefchaouen Blue #4895EF ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.040
- Soft Blue #6488EA ΔE 0.044
- Dodger Blue #1E90FF ΔE 0.060
- Perrywinkle #8F8CE7 ΔE 0.064
- Periwinkle Blue #8F99FB ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.071
Use #5D99EB 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.