#5F9FDB
Closest named color: Cornflower Blue (#6495ED). oklch(68.5% 0.111 248.3), rgb(95, 159, 219).
Aa
Black text reads best on this color (7.46:1).
About this color
#5F9FDB is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.111 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.043 away. Black text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #5F9FDB |
| RGB | rgb(95, 159, 219) |
| HSL | hsl(209, 63%, 62%) |
| OKLCH | oklch(68.5% 0.111 248.3) |
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 #5F9FDB | 2.81:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #5F9FDB | 7.46:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #5F9FDB text on white | 2.81:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #5F9FDB text on black | 7.46:1 | AAA | Lc -47.9 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300
#9EC5EC
oklch(80.9% 0.069 248.7)
-
Step 400
400 (this color)
#5F9FDB
oklch(68.5% 0.111 248.3)
-
Step 500
500
#358EDA
oklch(63% 0.142 248.2)
-
Step 600
600
#0077C6
oklch(55.6% 0.15 248.2)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#0E4470
oklch(37.7% 0.093 248.5)
-
Step 950
950
#0B2841
oklch(26.9% 0.058 248)
#5F9FDB 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) | #86A1DE | 0.045 |
| Deuteranopia (no green cones) | #7595DA | 0.033 |
| Tritanopia (no blue cones) | #00ADB4 | 0.093 |
| Achromatopsia (no color) | #9A9A9A | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F9FDB
#5F9FDB
oklch(68.5% 0.111 248.3)
- #C78C48
#C78C48
oklch(68.5% 0.111 67.9)
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 #5F9FDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.060
- Faded Blue #658CBB ΔE 0.061
- Greyblue #77A1B5 ΔE 0.062
- Soft Blue #6488EA ΔE 0.070
- Bluegrey #85A3B2 ΔE 0.075
- Perrywinkle #8F8CE7 ΔE 0.077
Use #5F9FDB 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.