#5399BB
Closest named color: Faded Blue (#658CBB). oklch(65.1% 0.087 231.3), rgb(83, 153, 187).
Aa
Black text reads best on this color (6.64:1).
About this color
#5399BB is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.087 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.039 away. Black text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.64:1 |
| White text | 3.16:1 |
Values
| HEX | #5399BB |
| RGB | rgb(83, 153, 187) |
| HSL | hsl(200, 43%, 53%) |
| OKLCH | oklch(65.1% 0.087 231.3) |
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 #5399BB | 3.16:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #5399BB | 6.64:1 | AA | Lc 45.5 | Large or bold text, headings |
| #5399BB text on white | 3.16:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #5399BB text on black | 6.64:1 | AA | Lc -43.2 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D7
oklch(80.9% 0.042 231.1)
-
Step 400
400
#74A9C4
oklch(70.8% 0.068 231.1)
-
Step 500
500 (this color)
#5399BB
oklch(65.1% 0.087 231.3)
-
Step 600
600
#2C7DA1
oklch(55.7% 0.095 231.4)
-
Step 700
700
#1D6989
oklch(49.1% 0.087 231)
-
Step 800
800
#1B5670
oklch(42.8% 0.073 231.3)
-
Step 900
900
#1D475A
oklch(37.7% 0.057 230.4)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#5399BB 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) | #8897BD | 0.060 |
| Deuteranopia (no green cones) | #798CBB | 0.052 |
| Tritanopia (no blue cones) | #00A2A4 | 0.063 |
| Achromatopsia (no color) | #919191 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5399BB
#5399BB
oklch(65.1% 0.087 231.3)
- #BA805E
#BA805E
oklch(65.1% 0.086 51.1)
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 #5399BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.039
- Greyblue #77A1B5 ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.048
- Cadet Blue #5F9EA0 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.050
- Dusty Blue #5A86AD ΔE 0.052
- Off Blue #5684AE ΔE 0.058
- Cool Blue #4984B8 ΔE 0.062
Use #5399BB 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.