#5597BF
Closest named color: Faded Blue (#658CBB). oklch(64.9% 0.09 237), rgb(85, 151, 191).
Aa
Black text reads best on this color (6.56:1).
About this color
#5597BF is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.090 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.032 away. Black text reads best on it, at 6.56:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #5597BF |
| RGB | rgb(85, 151, 191) |
| HSL | hsl(203, 45%, 54%) |
| OKLCH | oklch(64.9% 0.09 237) |
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 #5597BF | 3.19:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #5597BF | 6.56:1 | AA | Lc 45.0 | Large or bold text, headings |
| #5597BF text on white | 3.19:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #5597BF text on black | 6.56:1 | AA | Lc -42.7 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A7C6DA
oklch(81% 0.044 236.4)
-
Step 400
400
#76A8C7
oklch(70.8% 0.07 236.3)
-
Step 500
500 (this color)
#5597BF
oklch(64.9% 0.09 237)
-
Step 600
600
#307BA5
oklch(55.5% 0.098 237)
-
Step 700
700
#22688E
oklch(49.2% 0.091 236.9)
-
Step 800
800
#1E5573
oklch(42.8% 0.075 236.4)
-
Step 900
900
#1F465D
oklch(37.7% 0.059 237.1)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#5597BF 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) | #8596C1 | 0.055 |
| Deuteranopia (no green cones) | #768BBE | 0.046 |
| Tritanopia (no blue cones) | #00A1A4 | 0.071 |
| Achromatopsia (no color) | #909090 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5597BF
#5597BF
oklch(64.9% 0.09 237)
- #B98056
#B98056
oklch(64.8% 0.091 56.7)
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 #5597BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.032
- Silver Lake Blue #778DA9 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.049
- Blue Grey #758DA3 ΔE 0.051
- Greyblue #77A1B5 ΔE 0.053
- Off Blue #5684AE ΔE 0.054
- Cool Blue #4984B8 ΔE 0.056
- Cadet Blue #5F9EA0 ΔE 0.057
Use #5597BF 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.