#5D99CC
Closest named color: Faded Blue (#658CBB). oklch(66.3% 0.099 245.7), rgb(93, 153, 204).
Aa
Black text reads best on this color (6.89:1).
About this color
#5D99CC is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.099 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.89:1 |
| White text | 3.04:1 |
Values
| HEX | #5D99CC |
| RGB | rgb(93, 153, 204) |
| HSL | hsl(208, 52%, 58%) |
| OKLCH | oklch(66.3% 0.099 245.7) |
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 #5D99CC | 3.04:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #5D99CC | 6.89:1 | AA | Lc 46.9 | Large or bold text, headings |
| #5D99CC text on white | 3.04:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #5D99CC text on black | 6.89:1 | AA | Lc -44.6 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CBDBEA
oklch(88.4% 0.027 246.4)
-
Step 300
300
#A8C4DE
oklch(80.8% 0.048 246.4)
-
Step 400
400
#78A6CE
oklch(70.7% 0.077 245.4)
-
Step 500
500 (this color)
#5D99CC
oklch(66.3% 0.099 245.7)
-
Step 600
600
#3679AE
oklch(55.7% 0.107 245.4)
-
Step 700
700
#286596
oklch(49.1% 0.1 246.2)
-
Step 800
800
#235379
oklch(42.8% 0.082 245.4)
-
Step 900
900
#224562
oklch(37.8% 0.064 245.6)
-
Step 950
950
#142839
oklch(26.9% 0.041 245.8)
#5D99CC 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) | #839ACE | 0.044 |
| Deuteranopia (no green cones) | #758FCB | 0.035 |
| Tritanopia (no blue cones) | #10A5AA | 0.084 |
| Achromatopsia (no color) | #949494 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D99CC
#5D99CC
oklch(66.3% 0.099 245.7)
- #BC864E
#BC864E
oklch(66.2% 0.098 65.7)
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 #5D99CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Greyblue #77A1B5 ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.055
- Silver Lake Blue #778DA9 ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.058
- Chefchaouen Blue #4895EF ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.063
- Blue Grey #758DA3 ΔE 0.063
Use #5D99CC 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.