#5B7AEC
Closest named color: Cornflower (#6A79F7). oklch(61.4% 0.175 269.3), rgb(91, 122, 236).
Aa
Black text reads best on this color (5.43:1).
About this color
#5B7AEC is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.175 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.025 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #5B7AEC |
| RGB | rgb(91, 122, 236) |
| HSL | hsl(227, 79%, 64%) |
| OKLCH | oklch(61.4% 0.175 269.3) |
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 #5B7AEC | 3.86:1 | AA large text | Lc -71.3 | Content text, not long reading |
| Black text on #5B7AEC | 5.43:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #5B7AEC text on white | 3.86:1 | AA large text | Lc 65.8 | Content text, not long reading |
| #5B7AEC text on black | 5.43:1 | AA | Lc -35.9 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9FA
oklch(88.6% 0.048 268.4)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400
#7E9BF6
oklch(70.7% 0.137 269.3)
-
Step 500
500 (this color)
#5B7AEC
oklch(61.4% 0.175 269.3)
-
Step 600
600
#4865E1
oklch(55.5% 0.191 269.3)
-
Step 700
700
#3A53C3
oklch(49% 0.177 269.3)
-
Step 800
800
#30459E
oklch(42.8% 0.147 269.2)
-
Step 900
900
#2A3B7D
oklch(37.7% 0.114 269.4)
-
Step 950
950
#182349
oklch(26.9% 0.072 269)
#5B7AEC 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) | #3F89F0 | 0.042 |
| Deuteranopia (no green cones) | #207CEA | 0.047 |
| Tritanopia (no blue cones) | #0094A8 | 0.149 |
| Achromatopsia (no color) | #828282 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7AEC
#5B7AEC
oklch(61.4% 0.175 269.3)
- #A27F00
#A27F00
oklch(61.3% 0.125 89.2)
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 #5B7AEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.025
- Soft Blue #6488EA ΔE 0.040
- Clear Blue #247AFD ΔE 0.050
- Medium Slate Blue #7B68EE ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.065
- Chefchaouen Blue #4895EF ΔE 0.069
Use #5B7AEC 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.